Question

resolva pra mim.
x + (x +10) + 2 (x + 10)=150

Answer 1

x + (x +10) + 2 (x + 10)=150
2x +10 + 2x + 20 = 150
4x = 150 - 30
4x = 120
x = 120/4
x = 30

Answer 2

 
 
resolva pra mim.
x + (x +10) + 2 (x + 10)=150

x + x + 10 + 2x + 20 = 150
4x = 150 - 30
4x = 120
  x = 30