4x-6
-6c2-c
0.7x2-0.4x+y
-45a2-2a
-2x-1
2ab-2a+12b
920ab-310a-b
-120y2-112y
-2a-11b
11a+16b-4c
2ab+15a-17b
12x+18y-30
-4a+28b+0.8
-32a+2b-32
4x-18
31a-b+53c
11x
-2x-2
7m3+83
-6x35-3835
4a21-821
x-2
14a2b2c4
-6m3n4
96x2y2z2
-5a2b4c4
-250x4y2
-96x5y3
32x6y7
-25x10y63
3x
-6a2
-5x3y
-4m3n
3x8y2
12y3x3
m24n
-96m2n5
-b26a2
a2bc25
2xy2z