100
5(x+7)+3(x+4)
5x+35+3x+12
8x+47
100
2(x+5)-7
2x+10-7
2x+3
200
1(1-x)-1(1-x)
1-x-1+1
0
200
7-3(6x+5)
7-18x-15
-8-18x
300
(x-5)3+2(x-6)
3x-15+2x-12
5x-27
300
9x+2(9x-9)
9x+18x-18
27x-18
400
5(x+4)-2(x+4)
5x+20-2x-8
3x+12
500
-3(9+5x)-2(-6x-10)
-27-15x+12x+20
-7-3x
500
(x+5)(-3)+8x
-3x-15+8x
5x-15