20=2u+3(u+5)

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Solution for 20=2u+3(u+5) equation: 



20=2u+3(u+5)

We move all terms to the left:

20-(2u+3(u+5))=0



We calculate terms in parentheses: -(2u+3(u+5)), so:

2u+3(u+5)

We multiply parentheses

2u+3u+15

We add all the numbers together, and all the variables

5u+15

Back to the equation:

-(5u+15)



We get rid of parentheses

-5u-15+20=0

We add all the numbers together, and all the variables

-5u+5=0

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

-5u=-5

u=-5/-5

u=1

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