12r-5r=7r

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Solution for 12r-5r=7r equation: 


Simplifying
12r + -5r = 7r

Combine like terms: 12r + -5r = 7r
7r = 7r

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

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

Combine like terms: 7r + -7r = 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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