Cracking the Code: Solving Two-Step Equations

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Solving Two-Step Equations

Learning Objective

At the end of the lesson, you will understand how to solve two-step equations.

What do you already know about solving equations?

What Are Two-Step Equations?

Equations that require two operations to solve. E.g., 2x + 3 = 7.

Step 1: Undo Addition/Subtraction

Reverse addition/subtraction first. E.g., 2x + 3 = 7 becomes 2x = 4.

Step 2: Undo Multiplication/Division

Reverse multiplication/division. E.g., 2x = 4 becomes x = 2.

Interactive Demo: Solving Together

Solve: 3x - 5 = 10. Step 1: 3x = 15. Step 2: x = 5.

Common Mistakes

Watch out for sign errors and incorrect operations. Check your work.

Practice Time

Try: 4x + 2 = 10, 5x - 3 = 12. Share solutions.

Q&A and Summary

Any questions? Remember: solve step by step.

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.