-3(7+m)=21

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Solution for -3(7+m)=21 equation:


-3 (7+m)=21

We simplify the equation to the form, which is simple to understand
-3(7+m)=21

Reorder the terms in parentheses
+(-21-3m)=21

Remove unnecessary parentheses
-21-3m=+21

We move all terms containing m to the left and all other terms to the right.
-3m=+21+21

We simplify left and right side of the equation.
-3m=+42

We divide both sides of the equation by -3 to get m.
m=-14

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