15-13=2

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Solution for 15-13=2 equation: 


Simplifying
15 + -13 = 2

Combine like terms: 15 + -13 = 2
2 = 2

Add '-2' to each side of the equation.
2 + -2 = 2 + -2

Combine like terms: 2 + -2 = 0
0 = 2 + -2

Combine like terms: 2 + -2 = 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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