Question

Find the sum. 13(9−6m)+14(12m−8)

Answer 1

13(9-6m) + 14(12m-8)
117 - 78m + 168m - 112
(117 - 112) + (168m - 78m)
5 + 90m

Answer 2

To do this problem, we must first distribute the 13 and 14 into the parenthesis.

13(9−6m)+14(12m−8)

117 - 78m + 168m - 112

To combine like terms, we can add/subtract terms that have an "m" together and then we can add/subtract terms that do not have "m" together.

117 - 112 = 5
and
168m - 78m = 90m

So our final sum is 5 + 90m