8m+9m+7n
14k+2k+（-9p）
7y+2y-3g
6g+3g-5g+9d
5q+34q+e
3f+f+k+2k
2w+5w-7w
56t-38t+45y
64h-h+2h-6v
4p+9q+p
4y-4y+6y
5s+9s+96s-48s
78c-84c-8c
5i-4i+9q