Here is your answer mate ,
EXPLANATION:
5m-12=m(1m)
Take m to LHS and bring -12 to RHS
So the new equation would be
5m-1m=12. (-12 on bringing to other side will be +12)
4m=12
Therefore m=12/4 ( on division )
M=3
Hope it helps
pls——-mark———as————brainliest