-15=-15

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Solution for -15=-15 equation: 


Simplifying
-15 = -15

Add '15' to each side of the equation.
-15 + 15 = -15 + 15

Combine like terms: -15 + 15 = 0
0 = -15 + 15

Combine like terms: -15 + 15 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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