9-2a=7-2a

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


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

Add '2a' to each side of the equation.
9 + -2a + 2a = 7 + -2a + 2a

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

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

Solving
9 = 7

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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