2r+7r=9r

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Solution for 2r+7r=9r equation: 


Simplifying
2r + 7r = 9r

Combine like terms: 2r + 7r = 9r
9r = 9r

Add '-9r' to each side of the equation.
9r + -9r = 9r + -9r

Combine like terms: 9r + -9r = 0
0 = 9r + -9r

Combine like terms: 9r + -9r = 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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