64=4(u-80)

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Solution for 64=4(u-80) equation: 



64=4(u-80)

We move all terms to the left:

64-(4(u-80))=0



We calculate terms in parentheses: -(4(u-80)), so:

4(u-80)

We multiply parentheses

4u-320

Back to the equation:

-(4u-320)



We get rid of parentheses

-4u+320+64=0

We add all the numbers together, and all the variables

-4u+384=0

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

-4u=-384

u=-384/-4

u=+96

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