4-8u=84

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Solution for 4-8u=84 equation: 



4-8u=84

We move all terms to the left:

4-8u-(84)=0

We add all the numbers together, and all the variables

-8u-80=0

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

-8u=80

u=80/-8

u=-10

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