a+4=a-4

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Solution for a+4=a-4 equation: 


Simplifying
a + 4 = a + -4

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

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

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

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

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

Solving
4 = -4

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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