X+12=-77

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Solution for X+12=-77 equation: 


Simplifying
X + 12 = -77

Reorder the terms:
12 + X = -77

Solving
12 + X = -77

Solving for variable 'X'.

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

Add '-12' to each side of the equation.
12 + -12 + X = -77 + -12

Combine like terms: 12 + -12 = 0
0 + X = -77 + -12
X = -77 + -12

Combine like terms: -77 + -12 = -89
X = -89

Simplifying
X = -89

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