M+9=-11

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Solution for M+9=-11 equation: 


Simplifying
M + 9 = -11

Reorder the terms:
9 + M = -11

Solving
9 + M = -11

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 + M = -11 + -9

Combine like terms: 9 + -9 = 0
0 + M = -11 + -9
M = -11 + -9

Combine like terms: -11 + -9 = -20
M = -20

Simplifying
M = -20

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