-20=4(u-1)

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Solution for -20=4(u-1) equation: 



-20=4(u-1)

We move all terms to the left:

-20-(4(u-1))=0



We calculate terms in parentheses: -(4(u-1)), so:

4(u-1)

We multiply parentheses

4u-4

Back to the equation:

-(4u-4)



We get rid of parentheses

-4u+4-20=0

We add all the numbers together, and all the variables

-4u-16=0

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

-4u=16

u=16/-4

u=-4

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