Question

mostre pra min a resolução dessa conta:

3(2x-4)-2(x+8)=4(-x+9)-5

Answer 1

3*(2x-4)-2*(x+8)=4*(-x+9)-5
6x-12-2*(x+8)=4*(-x+9)-5
6x-12-(2x+16)=4*(-x+9)-5
6x-12-2x-16=4*(-x+9)-5
4x-12-16=4*(-x+9)-5
4x-28=4*(-x+9)-5
4x-28=4*(-x)+4*9-5
4x-28=-4x+4*9-5
4x-28=-4x+36-5
4x-28=-4x+31
4x+4x=31+28
8x=31+28
8x=59
x=59/8
$x= \frac{59}{8}$
x=7.375