-20=-5(u+1)

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Solution for -20=-5(u+1) equation: 



-20=-5(u+1)

We move all terms to the left:

-20-(-5(u+1))=0



We calculate terms in parentheses: -(-5(u+1)), so:

-5(u+1)

We multiply parentheses

-5u-5

Back to the equation:

-(-5u-5)



We get rid of parentheses

5u+5-20=0

We add all the numbers together, and all the variables

5u-15=0

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

5u=15

u=15/5

u=3

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