Math Café: How to Learn the Art of Writing and Solving Two-variable Equations
Welcome back to the Math Café, friend!
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1. Our Today’s Special: Two-variable Equations
Two-variable equations are our math dish for the day. They’re equations that involve two different variables (like ‘\(x\)’ and ‘\(y\)’). An example of a two-variable equation is \(y = 2x + 3\).
2. The Recipe: Writing and Solving
Our recipe involves two main steps: writing the equation and then solving it. It’s like baking a cake: first, we mix our ingredients (write the equation), and then we bake it to perfection (solve the equation).
Your Personal Chef Guide: How to Write and Solve Two-variable Equations
Let’s get cooking:
Step 1: Writing the Equation
This is where we translate a word problem or a real-life scenario into a two-variable equation. Look for the relationships and patterns that link the variables together.
Step 2: Solving the Equation
Now, we use algebraic methods to solve the equation for one of the variables. The solution will be in terms of the other variable.
Consider this problem: “If twice a number, increased by \(3\), equals that number plus \(10\). What is the number?”
- Writing the Equation: “Twice a number” suggests \(2x\), “increased by \(3\)” suggests \(+\ 3\), “equals to that number plus \(10\)” gives us \(= x + 10\). This translates into the equation \(2x + 3 = x + 10\).
- Solving the Equation: Subtract x from both sides to get \(x + 3 = 10\). Then, subtract \(3\) from both sides to solve for \(x\), giving us \(x = 7\).
That’s it for today’s special at the Math Café! Writing and solving two-variable equations can be a piece of cake with enough practice. So, keep working on your math recipes and before you know it, you’ll be a math gourmet. Stay curious, keep learning, and see you at our next math café gathering!
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