1. - 88 = - 3 (4m + 5) - (1 - 3m)

m=8

Step-by-step explanation:

-88=-3 (4m+5) - (1-3m)

-88=-12m-15 - (1-3m) < - Distributive Property

-88=-12m-15-1+3m < - Open () if there is a negative negative the symbol equals positive

-88=-9m-16 < - Simplify

0=-9m+72 < - Add 88 to both sides

9m = 72 < - Add 9m to both sides

9m = 72

/9 / 9

m=8