-6(1+7m)=-216

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Solution for -6(1+7m)=-216 equation: 


Simplifying
-6(1 + 7m) = -216
(1 * -6 + 7m * -6) = -216
(-6 + -42m) = -216

Solving
-6 + -42m = -216

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '6' to each side of the equation.
-6 + 6 + -42m = -216 + 6

Combine like terms: -6 + 6 = 0
0 + -42m = -216 + 6
-42m = -216 + 6

Combine like terms: -216 + 6 = -210
-42m = -210

Divide each side by '-42'.
m = 5

Simplifying
m = 5

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