9u-13u-u=15

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Solution for 9u-13u-u=15 equation:


9u-13u-u=15

We simplify the equation to the form, which is simple to understand 
9u-13u-u=15

We move all terms containing u to the left and all other terms to the right. 
+9u-13u-1u=+15

We simplify left and right side of the equation. 
-5u=+15

We divide both sides of the equation by -5 to get u. 
u=-3

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