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9(m+3)=3m-21
We simplify the equation to the form, which is simple to understand
9(m+3)=3m-21
Reorder the terms in parentheses
+(+9m+27)=3m-21
Remove unnecessary parentheses
+9m+27=+3m-21
We move all terms containing m to the left and all other terms to the right.
+9m-3m=-21-27
We simplify left and right side of the equation.
+6m=-48
We divide both sides of the equation by 6 to get m.
m=-8
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