Question

8х-15+7х=2х+50
Помогите а то училка!?(сами знаете!)

Answer 1

8х + 7х - 2х = 50 + 15
13х = 65
х = 65/13
х = 5

Answer 2

Ответ:

$8x - 15 + 7x = 2x + 50 \\ 8x + 7x - 2x = 50 + 15 \\ 15x - 2x = 65 \\ 13x = 65 \\ x = 65 \div 13 \\ x = 5$