Question

помогите с этими двумя уравнентями

Answer 1

1) 3х-12+5х-30 = 1+5х
3х+5х-5х = 1+12+30
3х = 43
х = 43/3 = 14 1/3

2) 15-3х-4х+8 = 3-4х
-3х-4х+4х = 3-15-8
-3х = -20
х = -20/-3 = 6 2/3