-20=4(u+3)-8u

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Solution for -20=4(u+3)-8u equation: 



-20=4(u+3)-8u

We move all terms to the left:

-20-(4(u+3)-8u)=0



We calculate terms in parentheses: -(4(u+3)-8u), so:

4(u+3)-8u

We add all the numbers together, and all the variables

-8u+4(u+3)

We multiply parentheses

-8u+4u+12

We add all the numbers together, and all the variables

-4u+12

Back to the equation:

-(-4u+12)



We get rid of parentheses

4u-12-20=0

We add all the numbers together, and all the variables

4u-32=0

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

4u=32

u=32/4

u=8

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