a-4=-9+a

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Solution for a-4=-9+a equation: 


Simplifying
a + -4 = -9 + a

Reorder the terms:
-4 + a = -9 + a

Add '-1a' to each side of the equation.
-4 + a + -1a = -9 + a + -1a

Combine like terms: a + -1a = 0
-4 + 0 = -9 + a + -1a
-4 = -9 + a + -1a

Combine like terms: a + -1a = 0
-4 = -9 + 0
-4 = -9

Solving
-4 = -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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