12.9+x=-13

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Solution for 12.9+x=-13 equation: 


Simplifying
12.9 + x = -13

Solving
12.9 + x = -13

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 = -13 + -12.9

Combine like terms: 12.9 + -12.9 = 0.0
0.0 + x = -13 + -12.9
x = -13 + -12.9

Combine like terms: -13 + -12.9 = -25.9
x = -25.9

Simplifying
x = -25.9

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