Question

Solve for x
8 + x/3 = 15

Answer 1

x = 21

Explanation:

`8+(x)/(3)=15\qquad\text{multiply both sides by 3}\\\\(3)(8)+3\!\!\!\!\diagup^1\cdot(x)/(3\!\!\!\!\diagup_1)=(3)(15)\\\\24+x=45\qquad\text{subtract 24 from both sides}\\\\24-24+x=45-24\\\\x=21`

Answer 2

x = 21

Explanation:

subtract 8 from both sides

you get x/3 = 7

multiply both sides by 3 you get x=21