Combine like terms
Subtract 7z from 18z
11z
(62)10
620
410/43
47
(22)-3
1/26
6h9•h2
7h11
9v3y2-10v3y2
-1v3y2
(12x9)5
12x45
X10/x
X9
(k-5)2
1/k10
-1-6-5r+13r
-7+8r
3(v2)7•4(v)4
12v18
m3n6/m2n2
mn4
(2v-6)5
32/v30
-8x-2y+23x-6y
15x-8y
3(h3)13•7(h2)5
21h49
24c10/8c3
3c7
(-3m10•4m6)2
144m8
9m-5n+14+m-2n-7
10m-7n+7
(-8u9t6)2+(4u6t4)3
128u18t12
16mn-2/10m2n-8
8/5m-1n6
(-8x9y6)2+(4x6y4)3
64x18y12