-13=2(u+4)+5u

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Solution for -13=2(u+4)+5u equation: 



-13=2(u+4)+5u

We move all terms to the left:

-13-(2(u+4)+5u)=0



We calculate terms in parentheses: -(2(u+4)+5u), so:

2(u+4)+5u

We add all the numbers together, and all the variables

5u+2(u+4)

We multiply parentheses

5u+2u+8

We add all the numbers together, and all the variables

7u+8

Back to the equation:

-(7u+8)



We get rid of parentheses

-7u-8-13=0

We add all the numbers together, and all the variables

-7u-21=0

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

-7u=21

u=21/-7

u=-3

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