А) 5х+(3х-7)=9 б) 3у-(5-у)=11

Question

А) 5х+(3х-7)=9
б) 3у-(5-у)=11

Answer 1

А)5х+(3х-7)=9 8х-7=9 8х=9+7 8х=16 Х=16:8 Х=2

Comments

б)

Answer 2

А)5х+3х=9-7
8х=2
х=2÷8
х=0.25
б)4у=11-5
4у=6
у=6÷4
у=1.5