20=3(u+8)-5u

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Solution for 20=3(u+8)-5u equation: 



20=3(u+8)-5u

We move all terms to the left:

20-(3(u+8)-5u)=0



We calculate terms in parentheses: -(3(u+8)-5u), so:

3(u+8)-5u

We add all the numbers together, and all the variables

-5u+3(u+8)

We multiply parentheses

-5u+3u+24

We add all the numbers together, and all the variables

-2u+24

Back to the equation:

-(-2u+24)



We get rid of parentheses

2u-24+20=0

We add all the numbers together, and all the variables

2u-4=0

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

2u=4

u=4/2

u=2

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