20u=-4(-2u-15)

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Solution for 20u=-4(-2u-15) equation: 



20u=-4(-2u-15)

We move all terms to the left:

20u-(-4(-2u-15))=0



We calculate terms in parentheses: -(-4(-2u-15)), so:

-4(-2u-15)

We multiply parentheses

8u+60

Back to the equation:

-(8u+60)



We get rid of parentheses

20u-8u-60=0

We add all the numbers together, and all the variables

12u-60=0

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

12u=60

u=60/12

u=5

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