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

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


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

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

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

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

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

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

Combine like terms: 3 + -18 = -15
-15 + 7m + 8m = 90

Combine like terms: 7m + 8m = 15m
-15 + 15m = 90

Solving
-15 + 15m = 90

Solving for variable 'm'.

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

Add '15' to each side of the equation.
-15 + 15 + 15m = 90 + 15

Combine like terms: -15 + 15 = 0
0 + 15m = 90 + 15
15m = 90 + 15

Combine like terms: 90 + 15 = 105
15m = 105

Divide each side by '15'.
m = 7

Simplifying
m = 7

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