Solve using inverse operations

Question

4x - 20=100

Answer 1

To solve the equation \( 4x - 20 = 100 \) using inverse operations, follow these steps:

1. Add 20 to both sides to eliminate the -20: \[ 4x - 20 + 20 = 100 + 20 \] This simplifies to: \[ 4x = 120 \]

2. Divide both sides by 4 to isolate \( x \): \[ \frac{4x}{4} = \frac{120}{4} \] This simplifies to: \[ x = 30 \]

Therefore, the solution is \( x = 30 \).