13=-5u+8(u+5)

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Solution for 13=-5u+8(u+5) equation: 



13=-5u+8(u+5)

We move all terms to the left:

13-(-5u+8(u+5))=0



We calculate terms in parentheses: -(-5u+8(u+5)), so:

-5u+8(u+5)

We multiply parentheses

-5u+8u+40

We add all the numbers together, and all the variables

3u+40

Back to the equation:

-(3u+40)



We get rid of parentheses

-3u-40+13=0

We add all the numbers together, and all the variables

-3u-27=0

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

-3u=27

u=27/-3

u=-9

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