1) 3(2x+5)-(4x-17)=0
6x+15-4x+17=0
2x+15+17=0
2x+22=0
2x=-22
x=-11
2)-3(6y-2)+5(3y+1)=20
-18y+6+15y+5=20
-3y+11=20
-3y=9
y=-3
3)6(9-2x)+7(4x+3)=-23
54-12x+28x+21=-23
16x+54+21=-23
16x+75=-23
16x=-98
x=-6,125
4)4(2x+3)-6(3+x)-x=-6
8x+12-18-6x-x=-6
8x-6-7x=-6
x-6=-6
x=0
5)-3(3y-12)+8(y+3)+23=-9
-9y-36+8y+24+23=-9
-y-36+47=-9
-y+11+9=0
-y=-20
y=20
6)5(4y-2,4)-2,5(4-8y)-7=-149
20y-12-10+20-7=-149
20y-22+13+149=0
20y-22+162=0
20y+140=0
20y=-140
y=-70