(-m)-(-9)=-20

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Solution for (-m)-(-9)=-20 equation:


Simplifying
(-1m) + -1(-9) = -20

Multiply -1 * -9
(-1m) + 9 = -20

Reorder the terms:
9 + (-1m) = -20

Solving
9 + (-1m) = -20

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) = -20 + -9

Combine like terms: 9 + -9 = 0
0 + (-1m) = -20 + -9
(-1m) = -20 + -9

Combine like terms: -20 + -9 = -29
(-1m) = -29

Divide each side by '-1'.
m = 29

Simplifying
m = 29

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