-9=m-18

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Solution for -9=m-18 equation:


Simplifying
-9 = m + -18

Reorder the terms:
-9 = -18 + m

Solving
-9 = -18 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
-9 + -1m = -18 + m + -1m

Combine like terms: m + -1m = 0
-9 + -1m = -18 + 0
-9 + -1m = -18

Add '9' to each side of the equation.
-9 + 9 + -1m = -18 + 9

Combine like terms: -9 + 9 = 0
0 + -1m = -18 + 9
-1m = -18 + 9

Combine like terms: -18 + 9 = -9
-1m = -9

Divide each side by '-1'.
m = 9

Simplifying
m = 9

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