Question

Помогите!!!!!!!!!!!!!!!

Answer 1

Б)3у+1/5=...
5•2=10
3у+1=10
3у=10-1
3у=9
у=9:3
у=3
Проверка:3•3+1/5=9+1/5=10/5=2
е)4+3у/5=...
8•5=40
4+3y=40
3y=40-4
3y=36
y=36:3
у=12
Проверка:4+3•12/5=4+36/5=40/5=8
к)у-10/3=...
3•7=21
y-10=21
y=21+10
y=31
Проверка:31-10/3=21/3=7