X+12.9=-5.5

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Solution for X+12.9=-5.5 equation: 


Simplifying
X + 12.9 = -5.5

Reorder the terms:
12.9 + X = -5.5

Solving
12.9 + X = -5.5

Solving for variable 'X'.

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

Add '-12.9' to each side of the equation.
12.9 + -12.9 + X = -5.5 + -12.9

Combine like terms: 12.9 + -12.9 = 0.0
0.0 + X = -5.5 + -12.9
X = -5.5 + -12.9

Combine like terms: -5.5 + -12.9 = -18.4
X = -18.4

Simplifying
X = -18.4

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