-7(j-9)=-21

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Solution for -7(j-9)=-21 equation: 



-7(j-9)=-21

We move all terms to the left:

-7(j-9)-(-21)=0

We add all the numbers together, and all the variables

-7(j-9)+21=0

We multiply parentheses

-7j+63+21=0

We add all the numbers together, and all the variables

-7j+84=0

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

-7j=-84

j=-84/-7

j=+12

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