-84=j+7

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Solution for -84=j+7 equation: 



-84=j+7

We move all terms to the left:

-84-(j+7)=0

We get rid of parentheses

-j-7-84=0

We add all the numbers together, and all the variables

-1j-91=0

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

-j=91

j=91/-1

j=-91

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