-20=-7u+5(u-2)

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Solution for -20=-7u+5(u-2) equation: 



-20=-7u+5(u-2)

We move all terms to the left:

-20-(-7u+5(u-2))=0



We calculate terms in parentheses: -(-7u+5(u-2)), so:

-7u+5(u-2)

We multiply parentheses

-7u+5u-10

We add all the numbers together, and all the variables

-2u-10

Back to the equation:

-(-2u-10)



We get rid of parentheses

2u+10-20=0

We add all the numbers together, and all the variables

2u-10=0

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

2u=10

u=10/2

u=5

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