solve the two step equation

Question

-2x+7=21

Answer 1

To solve the equation \(-2x + 7 = 21\), follow these steps:

1. Subtract 7 from both sides: \[ -2x + 7 - 7 = 21 - 7 \] This simplifies to: \[ -2x = 14 \]

2. Divide both sides by -2: \[ x = \frac{14}{-2} \] This simplifies to: \[ x = -7 \]

So, the solution is \(x = -7\).