X+2x+(2x-7)=68 Помогите

Question

X+2x+(2x-7)=68
Помогите

Answer 1

Х+2х+(2х-7)=68
х+2х+2х-7=68
5х=68+7
5х=75
х=75:5
х=15
Проверим:
15+2*15+(2*15-7)=68
15+30+23=68
68=68

Answer 2

X+2x+(2x-7)=68. x+2x+2x-7=68. 5x-7=68. 5x=68+7. 5x=75. x=75/5. x=15.