M+(-2)=-21

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Solution for M+(-2)=-21 equation: 


Simplifying
M + (-2) = -21
M + -2 = -21

Reorder the terms:
-2 + M = -21

Solving
-2 + M = -21

Solving for variable 'M'.

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

Add '2' to each side of the equation.
-2 + 2 + M = -21 + 2

Combine like terms: -2 + 2 = 0
0 + M = -21 + 2
M = -21 + 2

Combine like terms: -21 + 2 = -19
M = -19

Simplifying
M = -19

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