r+7=13+r

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Solution for r+7=13+r equation: 


Simplifying
r + 7 = 13 + r

Reorder the terms:
7 + r = 13 + r

Add '-1r' to each side of the equation.
7 + r + -1r = 13 + r + -1r

Combine like terms: r + -1r = 0
7 + 0 = 13 + r + -1r
7 = 13 + r + -1r

Combine like terms: r + -1r = 0
7 = 13 + 0
7 = 13

Solving
7 = 13

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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