7.8-9.9=

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Solution for 7.8-9.9= equation: 


Simplifying
7.8 + -9.9 = 0

Combine like terms: 7.8 + -9.9 = -2.1
-2.1 = 0

Solving
-2.1 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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