3(6-5х)+17х-10=18-15х+17х-10=8+2х

8(3у+4)-29у+14=24у+32-29у+14=46 -5у

7(2z-3)+6z-12=14z-21+6z-12=20z-33

2(7.3-1.6а)+3,2а-9,6=14,6-3,2а+3,2а-9,6=5

- 5(0,3b+1.7)+12.5-8.5b= - 1.5b-8.5+12.5-8.5b=4-10b

-4(3.3-8с)+4,8с+5,2= - 13,2+32с+4,8с+5,2=36,8с - 8