3у+5=4(9-у/2)
3у+5=36-4у/2
3у+4у/2=36-5
3у/1+4у/2=10у/2
10у/2=31
10у=31•2
10у=62
у=62:10
у=6,2
8(11-3/4z)=16z-44
88-24/4z=16z-44
88+44=16z+24/4z
132=22z
z=132:22
z=6
3(5+x/2)=4+2x
15+3x/2=4+2x
15-4=2x-3x/2
11=1/2x
x=11:1/2
x=22
2(3-x/3)=5+x
6-2x/3=5+x
6-5=x+2x/3
1=5x/3
5x=3
x=3:5
x=3/5=0,6