a) 6(x+3)-2(x-5)
6x+18-2x+10
4x+28
b) 3(2x+1)+7(x-3)-4x
6x+3+7x-21-4x
9x-18
c) 5(3-2x)-(x+7)-8
15-10x-x-7-8
-11x
d) 4(1-x)+6x-10-3(x-5)
4-4x+6x-10-3x+15
9-11x
e) 2x-3+3(x-1)-2(3-x)+5
2x-3+3x-3-6+2x+5
7x-7
f) 2(x+3)-(x+1)-1+3(5x-4)
2x+6-x-1-1+15x-12
16x-8
