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-6m-3+2m=-21+4m+3
We move all terms to the left:
-6m-3+2m-(-21+4m+3)=0
We add all the numbers together, and all the variables
-6m+2m-(4m-18)-3=0
We add all the numbers together, and all the variables
-4m-(4m-18)-3=0
We get rid of parentheses
-4m-4m+18-3=0
We add all the numbers together, and all the variables
-8m+15=0
We move all terms containing m to the left, all other terms to the right
-8m=-15
m=-15/-8
m=1+7/8
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