Is this what you mean?
3m/4 + 4 = 12
If so, multiply both sides by 4.
3m + 16 = 48
Subtract 16 from both sides.
3m = 32
However, if you mean (3m+4)/4 = 12
Do the same first step.
3m +4 = 48
3m = 44
Either way, the last step is to divide both sides by 3.
3m +4
___ =12
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