-20=4(u-4)-8u

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Solution for -20=4(u-4)-8u equation: 



-20=4(u-4)-8u

We move all terms to the left:

-20-(4(u-4)-8u)=0



We calculate terms in parentheses: -(4(u-4)-8u), so:

4(u-4)-8u

We add all the numbers together, and all the variables

-8u+4(u-4)

We multiply parentheses

-8u+4u-16

We add all the numbers together, and all the variables

-4u-16

Back to the equation:

-(-4u-16)



We get rid of parentheses

4u+16-20=0

We add all the numbers together, and all the variables

4u-4=0

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

4u=4

u=4/4

u=1

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