Solving One-Step Equations | Addition & Subtraction

Question:
Solve each equation and check the solution. Part a: x plus 14 equals 31. Part b: y minus 9 equals negative 4. Part c: negative 7 plus z equals 22.

Solving One-Step Equations | Addition & Subtraction

This lesson covers solving one-step linear equations that involve addition and subtraction. Students learn to isolate the variable by applying inverse operations to both sides of the equation, then verify each solution by substitution.

In this lesson, you will learn to:
• Apply inverse operations (addition and subtraction) to isolate a variable in a one-step equation
• Maintain equality by performing the same operation on both sides of an equation
• Use the commutative property of addition to rewrite equations in a clearer form
• Verify solutions by substituting back into the original equation

Course: Algebra1 · Big Ideas Math · Ron Larson · Chapter 1
Level: Grade 8

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