-1=4(u+5)-7u

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Solution for -1=4(u+5)-7u equation: 



-1=4(u+5)-7u

We move all terms to the left:

-1-(4(u+5)-7u)=0



We calculate terms in parentheses: -(4(u+5)-7u), so:

4(u+5)-7u

We add all the numbers together, and all the variables

-7u+4(u+5)

We multiply parentheses

-7u+4u+20

We add all the numbers together, and all the variables

-3u+20

Back to the equation:

-(-3u+20)



We get rid of parentheses

3u-20-1=0

We add all the numbers together, and all the variables

3u-21=0

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

3u=21

u=21/3

u=7

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