18.
10(b - 6)
Distributive property.
10b - 60.
20.
7(8 + y)
56 + 7y.
22.
9(2n + 1)
18n + 9
24.
18(5 - 3w)
90 - 54w
26.
7(8 + x + 2)
56 + 7x + 14
Combine like terms.
70 + 7x
28.
6(10 + z + 3)
60 + 6z + 18
78 + 6z
30.
25(x - y)
25x - 25y
32.
13(n + 4 + 7m)
13n + 52 + 91
5.8m questions
7.6m answers