5m-(6m+9)=21

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Solution for 5m-(6m+9)=21 equation:


Simplifying
5m + -1(6m + 9) = 21

Reorder the terms:
5m + -1(9 + 6m) = 21
5m + (9 * -1 + 6m * -1) = 21
5m + (-9 + -6m) = 21

Reorder the terms:
-9 + 5m + -6m = 21

Combine like terms: 5m + -6m = -1m
-9 + -1m = 21

Solving
-9 + -1m = 21

Solving for variable 'm'.

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

Add '9' to each side of the equation.
-9 + 9 + -1m = 21 + 9

Combine like terms: -9 + 9 = 0
0 + -1m = 21 + 9
-1m = 21 + 9

Combine like terms: 21 + 9 = 30
-1m = 30

Divide each side by '-1'.
m = -30

Simplifying
m = -30

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