15.5+x=12

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Solution for 15.5+x=12 equation: 


Simplifying
15.5 + x = 12

Solving
15.5 + x = 12

Solving for variable 'x'.

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

Add '-15.5' to each side of the equation.
15.5 + -15.5 + x = 12 + -15.5

Combine like terms: 15.5 + -15.5 = 0.0
0.0 + x = 12 + -15.5
x = 12 + -15.5

Combine like terms: 12 + -15.5 = -3.5
x = -3.5

Simplifying
x = -3.5

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