(7m-3)+90+(8m-18)=180

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Solution for (7m-3)+90+(8m-18)=180 equation: 


Simplifying
(7m + -3) + 90 + (8m + -18) = 180

Reorder the terms:
(-3 + 7m) + 90 + (8m + -18) = 180

Remove parenthesis around (-3 + 7m)
-3 + 7m + 90 + (8m + -18) = 180

Reorder the terms:
-3 + 7m + 90 + (-18 + 8m) = 180

Remove parenthesis around (-18 + 8m)
-3 + 7m + 90 + -18 + 8m = 180

Reorder the terms:
-3 + 90 + -18 + 7m + 8m = 180

Combine like terms: -3 + 90 = 87
87 + -18 + 7m + 8m = 180

Combine like terms: 87 + -18 = 69
69 + 7m + 8m = 180

Combine like terms: 7m + 8m = 15m
69 + 15m = 180

Solving
69 + 15m = 180

Solving for variable 'm'.

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

Add '-69' to each side of the equation.
69 + -69 + 15m = 180 + -69

Combine like terms: 69 + -69 = 0
0 + 15m = 180 + -69
15m = 180 + -69

Combine like terms: 180 + -69 = 111
15m = 111

Divide each side by '15'.
m = 7.4

Simplifying
m = 7.4

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