Jawabanmu

2014-03-22T08:36:58+07:00
7+2m = 11+4m
2m-4m = 11-7
-2m = 4
m = 4/-2

m = -2 
2014-03-22T08:37:28+07:00
7 + 2m = 11 + 4m
-2m = 4
m = -2

Jadi, m = {m | m = -4}


semoga membantu :)