9.9+x=12.4

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Solution for 9.9+x=12.4 equation: 


Simplifying
9.9 + x = 12.4

Solving
9.9 + x = 12.4

Solving for variable 'x'.

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

Add '-9.9' to each side of the equation.
9.9 + -9.9 + x = 12.4 + -9.9

Combine like terms: 9.9 + -9.9 = 0.0
0.0 + x = 12.4 + -9.9
x = 12.4 + -9.9

Combine like terms: 12.4 + -9.9 = 2.5
x = 2.5

Simplifying
x = 2.5

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