25=4u+5(u-4)

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Solution for 25=4u+5(u-4) equation: 



25=4u+5(u-4)

We move all terms to the left:

25-(4u+5(u-4))=0



We calculate terms in parentheses: -(4u+5(u-4)), so:

4u+5(u-4)

We multiply parentheses

4u+5u-20

We add all the numbers together, and all the variables

9u-20

Back to the equation:

-(9u-20)



We get rid of parentheses

-9u+20+25=0

We add all the numbers together, and all the variables

-9u+45=0

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

-9u=-45

u=-45/-9

u=+5

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