2u+7u=9u

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


Simplifying
2u + 7u = 9u

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

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

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

Combine like terms: 9u + -9u = 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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