81=-3(5+4m)

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Solution for 81=-3(5+4m) equation:


81=-3(5+4m)

We simplify the equation to the form, which is simple to understand 
81=-3(5+4m)

Reorder the terms in parentheses
81=+(-15-12m)

Remove unnecessary parentheses
+81=-15-12m

We move all terms containing m to the left and all other terms to the right. 
+12m=-15-81

We simplify left and right side of the equation. 
+12m=-96

We divide both sides of the equation by 012 to get m. 
m=-8

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