2(5+х)=7-х решите п.ж

Question

2(5+х)=7-х решите п.ж

Answer 1

2(5+х)=7-х
10+2х=7-х
2х+х=7-10
3х= -3
х= -1

Answer 2

10+2x =7-x
2x+x =-10+7
3x = -3
x = -3/3
x = -1