(r-s)+(s-r)=

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Solution for (r-s)+(s-r)= equation: 


Simplifying
(r + -1s) + (s + -1r) = 0

Remove parenthesis around (r + -1s)
r + -1s + (s + -1r) = 0

Reorder the terms:
r + -1s + (-1r + s) = 0

Remove parenthesis around (-1r + s)
r + -1s + -1r + s = 0

Reorder the terms:
r + -1r + -1s + s = 0

Combine like terms: r + -1r = 0
0 + -1s + s = 0
-1s + s = 0

Combine like terms: -1s + s = 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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