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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