Question

Tolong bantu ya teman...^_^

Answer 1

A.)7-5m + (-8)+15m = 7-8+15m-5m = -1+10m
b.) 10-6m = -8+15m + ....
   ... = -8+15m-10-6m
   ... = -8-10+15m-6m
   ... = -18 + 9m
c.) -1+10m + 10-6m = -1+10+10m-6m = 9+4m

maaf bila ada kesalahan