-2х+20=5х-15 помогите

Question

-2х+20=5х-15 помогите

Answer 1

-2х + 20 = 5х - 15
-2х - 5х = -15 - 20
-7х = -35
х = 5

Answer 2

-2х+20=5х-15
-2х-5х=-15-20
-7х=-35
х=-35:(-7)
х=5
проверка:
-2*5+20=5*5-15
-10+20=25-15
        10=10