tamirsen09

Verified answer

Ответ:

4(x-3)+2(5-x)=8

4x-12+10-2x=8

4x-2x=12-10+8

2x=10

x=10:2

x=5

b)7(5-y)+8(y-3)=18

35-7y+8y-24=18

-7y+8y=18-35+24

y=41