3(12-4)=21-13m

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Solution for 3(12-4)=21-13m equation: 



3(12-4)=21-13m

We move all terms to the left:

3(12-4)-(21-13m)=0

We add all the numbers together, and all the variables

-(-13m+21)+38=0

We get rid of parentheses

13m-21+38=0

We add all the numbers together, and all the variables

13m+17=0

We move all terms containing m to the left, all other terms to the right

13m=-17

m=-17/13

m=-1+4/13

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