m-($50)9=1/4m

Question

the answer (m) is $600. what is the process for getting the answer?

Answer 1

m-450=1/4m
-450=1/4m-1m
-450=1/4m-4/4m
-450=-3/4m
-450*(-4/3)=m
600=m

Answer 2

so the 4/4 comes from the original m?

the way you did it is completely opposite from how i learned.

i thought that i would subtract 1/4m and cancel that out, then subract 1/4 from m.

Answer 3

He basically did the same thing he subtracted m from both sides. Both are valid ways.