(u-3)7=28

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Solution for (u-3)7=28 equation: 



(u-3)7=28

We move all terms to the left:

(u-3)7-(28)=0

We multiply parentheses

7u-21-28=0

We add all the numbers together, and all the variables

7u-49=0

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

7u=49

u=49/7

u=7

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