(u-5)9=81

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Solution for (u-5)9=81 equation: 



(u-5)9=81

We move all terms to the left:

(u-5)9-(81)=0

We multiply parentheses

9u-45-81=0

We add all the numbers together, and all the variables

9u-126=0

We move all terms containing u to the left, all other terms to the right

9u=126

u=126/9

u=14

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