How to Solve Multi-Step Inequalities? (+FREE Worksheet!)

How to Solve Multi-Step Inequalities? (+FREE Worksheet!)
Algebra 1

How to Solve Multi-Step Inequalities

A multi-step inequality is solved almost exactly like a multi-step equation, distribute, combine like terms, gather the variable, with one rule on top: if you multiply or divide both sides by a negative, flip the inequality sign. We’ll work through it carefully, with a solver, drills, and a worksheet maker a tap away.

Tutor-style math help

Solve Multi-Step Inequalities: what to notice and how to work it

Inequalities skill
Inequalities describe a set of possible values. Solve the boundary like an equation, then decide which side of the boundary makes the statement true.

What to notice first

Watch the comparison sign from the first line to the last. Multiplying or dividing by a negative reverses the direction.

Common student mistake

Do not forget open and closed endpoints. Strict signs use open circles; signs with equals use closed circles.

Key formulas and cues

\(a<b\)
\(a\le b\)
\(\text{multiply/divide by a negative} \Rightarrow \text{reverse the sign}\)
\(|x-a|<b \Rightarrow a-b<x<a+b\)
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A reliable path

  1. Solve the boundaryTemporarily treat the inequality like an equation.
  2. Choose the sideUse the sign or test a number if the direction is not obvious.
  3. Graph the solutionUse the correct endpoint and shade the values that work.

Worked examples

Flip the sign

Example: \(-3x>12\)
  1. Divide both sides by -3.
  2. Reverse the inequality sign.
  3. Simplify 12 divided by -3.
Answer: \(x<-4\)

Keep the sign

Example: \(x+5\le9\)
  1. Subtract 5 from both sides.
  2. No negative multiplication or division happened.
  3. Keep the sign direction.
Answer: \(x\le4\)
Try one before moving on
Try: Solve \(-2x\le10\).
Answer: \(x\ge-5\). Divide by -2 and flip the sign.
Next step: do the matching worksheet or quiz while the method is still fresh, then come back and explain the first step in your own words.
Illustration of students learning How to Solve Multi-Step Inequalities

If you can solve a multi-step equation, you’re most of the way to solving a multi-step inequality. You do the same moves, distribute, combine like terms, get the variable by itself, but you carry an inequality sign along instead of an equals sign, and there’s one rule that catches almost everyone: multiply or divide by a negative, and the sign flips. The reward is an answer that’s a whole range of values, not a single number.

In short: simplify both sides, gather the variable, then isolate it, and flip the inequality whenever you multiply or divide both sides by a negative. For example, \(3x + 2 > x + 10\) becomes \(x > 4\).

The big idea

Solve Like an Equation, Watch for the Flip

Adding or subtracting never changes the direction of an inequality. Multiplying or dividing by a positive doesn’t either. The only move that reverses the sign is multiplying or dividing both sides by a negative number, because that mirrors every value across zero, reversing their order.

How to solve (4 steps):

  1. Distribute to clear parentheses.
  2. Combine like terms on each side.
  3. Gather the variable on one side; move constants to the other.
  4. Divide to isolate the variable, and flip the sign if you divided by a negative.
Tutor tip: One way to dodge the flip entirely: move the variable to whichever side keeps its coefficient positive. For \(5 – 3x \ge x + 9\), adding \(3x\) to both sides avoids ever dividing by a negative.

Worked Examples

Same moves as a multi-step equation, then read the range off the number line.

Example A, Variables on both sides

Solve \(3x + 2 > x + 10\).

  1. Subtract \(x\) from both sides to gather the variable: \(2x + 2 > 10\).
  2. Subtract 2: \(2x > 8\).
  3. Divide by 2 (positive, no flip): \(x > 4\). Graph: open circle at 4, arrow right.

Answer: \(x > 4\)

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Example B, Distribute first

Solve \(2(x – 1) \le 8\).

  1. Distribute the 2: \(2x – 2 \le 8\).
  2. Add 2 to both sides: \(2x \le 10\).
  3. Divide by 2: \(x \le 5\). Graph: closed circle at 5, arrow left.

Answer: \(x \le 5\)

-8-7-6-5-4-3-2-1012345678

Example C, Divide by a negative (flip!)

Solve \(-2x + 3 < 7\).

  1. Subtract 3 from both sides: \(-2x < 4\).
  2. Divide by \(-2\), dividing by a negative, so flip: \(x > -2\).
  3. Graph: open circle at \(-2\), arrow right.

Answer: \(x > -2\)

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Example D, Negative after gathering

Solve \(5 – 3x \ge x + 9\).

  1. Subtract \(x\) and 5 from both sides: \(-4x \ge 4\).
  2. Divide by \(-4\) and flip: \(x \le -1\).
  3. Graph: closed circle at \(-1\), arrow left.

Answer: \(x \le -1\)

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Where You’ll Use It

Multi-step inequalities show up whenever a real situation involves a limit and a few moving parts: staying within a budget after a setup fee, keeping a grade above a cutoff, or making sure a load stays under a weight cap. Solving one tells you the full set of values that keep you on the right side of the line.

Easy Points to Lose

  • Forgetting to flip. The classic miss, dividing or multiplying by a negative without reversing the sign.
  • Flipping when you shouldn’t. Adding or subtracting (even a negative) never flips the sign; only multiplying/dividing by a negative does.
  • Distributing to one term. \(2(x – 1)\) is \(2x – 2\); multiply both terms inside.
  • Reading the final direction wrong. After a flip, double-check which way the symbol points before you graph it.

Your Turn: Solve

Solve each, flipping when needed, then reveal the answers.

  1. \(4x – 1 < 2x + 7\)
  2. \(3(x + 2) \ge x + 10\)
  3. \(-x + 4 \le 2x – 5\)
  4. \(2x + 9 > 5x\)
  5. \(10 – 2x \le 4\)
  6. \(\dfrac{x}{2} + 1 > 3\)
Show answers (with graphs)
  1. \(\color{blue}{x<4}\)
  2. \(\color{blue}{x\ge 2}\)
  3. \(\color{blue}{x\ge 3 \text{ (flipped)}}\)
  4. \(\color{blue}{x<3 \text{ (flipped)}}\)
  5. \(\color{blue}{x\ge 3 \text{ (flipped)}}\)
  6. \(\color{blue}{x>4}\)
1. \(x < 4\)
-7-6-5-4-3-2-101234567
2. \(x \ge 2\)
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3. \(x \ge 3\)
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4. \(x < 3\)
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5. \(x \ge 3\)
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6. \(x > 4\)
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Keep practicing

Make Your Own Inequalities Worksheet

Generate fresh multi-step inequalities with a full answer key, print or save as a PDF.

New problems every click, never the same sheet twice
Step-by-step answer key so you can self-check
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Frequently Asked Questions

How do you solve multi-step inequalities?

Solve them like multi-step equations: distribute, combine like terms, move the variable to one side and isolate it. The one extra rule is that multiplying or dividing both sides by a negative number flips the inequality sign. For 2(x + 3) > 14, distribute to get 2x + 6 > 14, subtract 6 to get 2x > 8, and divide by 2, so x > 4.

How do you solve multi-step inequalities with fractions?

Clear the fractions first by multiplying every term by the least common denominator, which is a positive number, so the sign stays the same. For x/3 + 1/2 ≤ 5/6, multiply by 6 to get 2x + 3 ≤ 5. Then 2x ≤ 2, so x ≤ 1. Working with whole numbers after that step makes sign errors much less likely.

How do you graph multi-step inequalities?

Solve the inequality first, then graph the simplified answer on a number line. Use an open circle for < or > because the boundary is not included, and a closed circle for ≤ or ≥. Shade toward larger numbers for > or ≥ and toward smaller numbers for < or ≤. For x ≥ −2, put a closed dot at −2 and shade to the right.

How do you solve multi-step inequalities with variables on both sides?

Move all variable terms to one side and all numbers to the other, then isolate the variable. For 5x − 4 < 2x + 8, subtract 2x to get 3x − 4 < 8, add 4 to get 3x < 12, and divide by 3, so x < 4. Moving the variable to the side with the larger coefficient often avoids dividing by a negative.

How do you solve multi-step inequalities with parentheses?

Use the distributive property to remove the parentheses, then solve as usual. Watch the signs when a negative sits outside: −3(x − 2) ≥ 12 becomes −3x + 6 ≥ 12. Subtract 6 to get −3x ≥ 6, then divide by −3 and flip the sign, giving x ≤ −2. Test a value like x = −3 in the original to confirm.

How do you solve multi-step inequality word problems?

Pick a variable, translate key phrases like ‘at least’ (≥) and ‘no more than’ (≤), then solve. Example: a gym charges a $20 fee plus $15 per class, and you can spend at most $110. Write 20 + 15c ≤ 110, so 15c ≤ 90 and c ≤ 6. You can take at most 6 classes. Always check that the answer makes sense in context.

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