7-2x=9x-8(x+1) решение

Question

7-2x=9x-8(x+1) решение

Answer 1

7-2x=9x-8(x+1); 7-2х=9х-8х-8; -2х+х=-8-7; -х=-15; Х=15

Answer 2

7-2х=9х-8х-1
7+1=9х-8х+2х
8=3х
х=2 2/3