Cracking the Code: Solving Two-Step Equations
Solving Two-Step Equations
Items in this lesson
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.
