(-7)j=-21

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Solution for (-7)j=-21 equation: 



(-7)j=-21

We move all terms to the left:

(-7)j-(-21)=0

We add all the numbers together, and all the variables

(-7)j+21=0

We multiply parentheses

-7j+21=0

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

-7j=-21

j=-21/-7

j=+3

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