28=-9-8+5u

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Solution for 28=-9-8+5u equation: 



28=-9-8+5u

We move all terms to the left:

28-(-9-8+5u)=0

We add all the numbers together, and all the variables

-(5u-17)+28=0

We get rid of parentheses

-5u+17+28=0

We add all the numbers together, and all the variables

-5u+45=0

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

-5u=-45

u=-45/-5

u=+9

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