Question

Решите уравнение
13x+70=2x+!5

Answer 1

13х-2х=15-70
11х=-55
х=-5

Answer 2

13х + 70 = 2х + 15
13х - 2х = 15 - 70
11х = - 55
х = - 55 : 11
х = - 5

проверка:
13 * (- 5) + 70 = 2 * (- 5) + 15
- 65 + 70 = - 10 + 15
5 = 5