Question

  решить уравнение 2(x+7)=9-2x

Answer 1

2(x+7)=9-2x;

2х+14=9-2х;

4х=-5;

х=-1,25.

Answer 2

2х+14=9-2х

2х+2х=9-14

4х=-5

х=-5/4

х=-1,25