Solve One-Step Equations
One-step equations are solved by applying inverse operations to isolate the variable.
Do this: Read the concept below, then try the quiz or activity.
Lesson 123 of 190
64%
Concept
If x + a = b, subtract a. If x - a = b, add a. If ax = b, divide by a. If x/a = b, multiply by a.
Examples: - x + 7 = 19 -> x = 12 - 5x = -35 -> x = -7 - x/4 = 6 -> x = 24
Try it
Solve: 1. x + 9 = 15 2. y - 4 = -3 3. 6a = 42 4. b/5 = -8 5. -3m = 27 6. n + (-12) = 5