2a+7a-9a=

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Solution for 2a+7a-9a= equation: 


Simplifying
2a + 7a + -9a = 0

Combine like terms: 2a + 7a = 9a
9a + -9a = 0

Combine like terms: 9a + -9a = 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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