Question

6х-(2х+13)-(х-7)=15х

Answer 1

6x-2x-13-x+7-15x=0

6x-2x-x-15x=13-7

-12x=6

x=-0,5

Answer 2

6х-2х-13-х+7=15х

6х-2х-х-15х=-7+13

-12х=6

х=-1/2