7u-7u=9

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Solution for 7u-7u=9 equation:


7u-7u=9

We simplify the equation to the form, which is simple to understand 
7u-7u=9

We move all terms containing u to the left and all other terms to the right. 
+7u-7u=+9

We simplify left and right side of the equation. 
u=+9

0=9

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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