Question

помогите пожалуйста! номер 434 примеры 2 и 3

Answer 1

2) (3+х)/5 - 7 = (х-2)/3

3(3+х) - 105 = 5(х-2)

9+3х-105=5х-10

-96+3х = 5х-10

3х - 5х = -10+96

-2х = 86

х = -43

3) (4-х)/5 - (х-2)/4 = 4

4(4-х)-5(х-2) = 80

16-4х-5х+10 = 80

26-9х = 80

-9х = 80-26

-9х = 54

х = -6