2.1-9=

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Solution for 2.1-9= equation: 


Simplifying
2.1 + -9 = 0

Combine like terms: 2.1 + -9 = -6.9
-6.9 = 0

Solving
-6.9 = 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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