Question

Solve for x 2(x+9)=x+21

Answer 1

Answer: x = 3

Explanation:

Step 1: Simplify both sides of the equation.

2(x+9)=x+21

(2)(x)+(2)(9)=x+21 (Distribute)

2x+18=x+21

Step 2: Subtract x from both sides.

2x+18−x=x+21−x

x+18=21

Step 3: Subtract 18 from both sides.

x+18−18=21−18

x=3