(u-8)*7=28

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Solution for (u-8)*7=28 equation: 



(u-8)*7=28

We move all terms to the left:

(u-8)*7-(28)=0

We multiply parentheses

7u-56-28=0

We add all the numbers together, and all the variables

7u-84=0

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

7u=84

u=84/7

u=12

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