9.9-x=10

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Solution for 9.9-x=10 equation: 


Simplifying
9.9 + -1x = 10

Solving
9.9 + -1x = 10

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 + -1x = 10 + -9.9

Combine like terms: 9.9 + -9.9 = 0.0
0.0 + -1x = 10 + -9.9
-1x = 10 + -9.9

Combine like terms: 10 + -9.9 = 0.1
-1x = 0.1

Divide each side by '-1'.
x = -0.1

Simplifying
x = -0.1

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