3m+8-5m-9=7

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Solution for 3m+8-5m-9=7 equation:


Simplifying
3m + 8 + -5m + -9 = 7

Reorder the terms:
8 + -9 + 3m + -5m = 7

Combine like terms: 8 + -9 = -1
-1 + 3m + -5m = 7

Combine like terms: 3m + -5m = -2m
-1 + -2m = 7

Solving
-1 + -2m = 7

Solving for variable 'm'.

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

Add '1' to each side of the equation.
-1 + 1 + -2m = 7 + 1

Combine like terms: -1 + 1 = 0
0 + -2m = 7 + 1
-2m = 7 + 1

Combine like terms: 7 + 1 = 8
-2m = 8

Divide each side by '-2'.
m = -4

Simplifying
m = -4

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