Question

Resolvam para mim pf?

3.(x+7).5=180

Answer 1

15x+105=180
15x=75
x=5

Answer 2

(3 x + 21) *5 = 180

15x +105 = 180

15x = 180 - 105

15x = 180 - 105

x = 75
   --------
      15

x =5