3a+2b+4a+b
7y+5y+2h+2h
g+8a+2a+g
7m+7p+8m+p+2p
9e+2+e+2
4+3a+2a+8
2y+4+3y-1
8+3w-w-3
5-4s-2+10s
3x+6y+5x-2y
y-4m-3y-5m
7p-2q-q+3r+4r
11c+8d-6c-11d