Lesson 2 — Solving Linear Equations (Two steps)

To solve ax + b = c (with a ≠ 0), isolate the variable using the two rules of equality:

Rule 1 (Add/Subtract)

You may add or subtract the same number on both sides.

Rule 2 (Multiply/Divide)

You may multiply or divide both sides by the same nonzero number.

Isolation Animator (sandbox)

Equation (form: ax + b = c)

Variable

k / m

Operation (applies to both sides)

History: original equation stays; each Apply adds a new line.

Goal: make the variable box turn green (variable alone) ✅

Question 1 of 5

More practice (unlocks as you answer correctly)