6-4u=-84

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Solution for 6-4u=-84 equation: 



6-4u=-84

We move all terms to the left:

6-4u-(-84)=0

We add all the numbers together, and all the variables

-4u+90=0

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

-4u=-90

u=-90/-4

u=22+1/2

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