6-7u=-84

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Solution for 6-7u=-84 equation: 



6-7u=-84

We move all terms to the left:

6-7u-(-84)=0

We add all the numbers together, and all the variables

-7u+90=0

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

-7u=-90

u=-90/-7

u=12+6/7

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