-7y-5
8y2-6y
1.5a-0.9
12a2+524a-13
2ab+7a-10b
-2a+3b
76x+47y-2
-18x3+542x2+116x
-2a-11b
10x2-9x+5
5a+5b-c
48a-36b
-0.9a2-4.5a+3.6b
-32a+2b-32
-2a+8c
-2x+63y+1
3128a+8615b
4x-4y
3x4+54
a6-b6
9x35+71y35
23x6-76
84x3y4z6
4abc25
72p4q3r5
-x4y442
-250x4y2
-96x5y3
2a4b4c47
a9b11c784
-23m3
-3x22
8a3b2
-4m3n
3x8y2
6ab
-24y2x
225c4a4b6
-7q2r29p
-a23
-4p3r3