Question

100-(b*8-50)=30 решить уравнение

Answer 1

8в-50=100-30
8в-50=70
8в=70+50
8в=120
в=120:8
в=15

Answer 2

b*8-50=100-30 b*8-50=70 b*8=70+50 b*8=120 b=120:8 b=15 100-(15*8-50)=30 30=30