a-7=a-8

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Solution for a-7=a-8 equation: 


Simplifying
a + -7 = a + -8

Reorder the terms:
-7 + a = a + -8

Reorder the terms:
-7 + a = -8 + a

Add '-1a' to each side of the equation.
-7 + a + -1a = -8 + a + -1a

Combine like terms: a + -1a = 0
-7 + 0 = -8 + a + -1a
-7 = -8 + a + -1a

Combine like terms: a + -1a = 0
-7 = -8 + 0
-7 = -8

Solving
-7 = -8

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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