# Math Café: How to Learn the Art of Writing and Solving Two-variable Equations

Welcome back to the Math Café, friend!

Today's special is a heart-warming topic that many find filling and satisfying - Writing and Solving Two-variable Equations. So, pull up a chair, grab a cup of coffee, and let's enjoy the delicious math that lies ahead.

## 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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