-2q=9-2q

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Solution for -2q=9-2q equation: 


Simplifying
-2q = 9 + -2q

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

Combine like terms: -2q + 2q = 0
0 = 9 + -2q + 2q

Combine like terms: -2q + 2q = 0
0 = 9 + 0
0 = 9

Solving
0 = 9

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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