20=-6u+8(u+5)

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Solution for 20=-6u+8(u+5) equation: 



20=-6u+8(u+5)

We move all terms to the left:

20-(-6u+8(u+5))=0



We calculate terms in parentheses: -(-6u+8(u+5)), so:

-6u+8(u+5)

We multiply parentheses

-6u+8u+40

We add all the numbers together, and all the variables

2u+40

Back to the equation:

-(2u+40)



We get rid of parentheses

-2u-40+20=0

We add all the numbers together, and all the variables

-2u-20=0

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

-2u=20

u=20/-2

u=-10

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