5u=81-4u

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Solution for 5u=81-4u equation:


5u=81-4u

We simplify the equation to the form, which is simple to understand 
5u=81-4u

We move all terms containing u to the left and all other terms to the right. 
+5u+4u=+81

We simplify left and right side of the equation. 
+9u=+81

We divide both sides of the equation by 9 to get u. 
u=9

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