Question

SI 3(x-20)= x + 4, ENTONCES X =

Answer 1

3x - 60 = x + 4

2x = 64
x = 32

Answer 2

3x-60=x+4
3x-x=4+60
2x=64
x=64/2
x=32

Comprobación: 
3(32-20)=32+4
3(12)=36
36=36