a-3-a=9

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Solution for a-3-a=9 equation: 


Simplifying
a + -3 + -1a = 9

Reorder the terms:
-3 + a + -1a = 9

Combine like terms: a + -1a = 0
-3 + 0 = 9
-3 = 9

Solving
-3 = 9

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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