72=3(u+3)

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Solution for 72=3(u+3) equation:


72=3(u+3)

We simplify the equation to the form, which is simple to understand 
72=3(u+3)

Reorder the terms in parentheses
72=+(+3u+9)

Remove unnecessary parentheses
+72=+3u+9

We move all terms containing u to the left and all other terms to the right. 
-3u=+9-72

We simplify left and right side of the equation. 
-3u=-63

We divide both sides of the equation by -03 to get u. 
u=21

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