Respuesta :

(5x + 12) = 18

Remove the parenthesis from the right hand side:

5x + 12 = 18

Subtract 12 from both sides:

5x + 12 - 12 = 18 - 12

5x = 6

Divide both sides by 5:

5x/5 = 6/5

x = 6/5 = 1.2

RELAXING NOICE
Relax