21=7(j-89)

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Solution for 21=7(j-89) equation: 



21=7(j-89)

We move all terms to the left:

21-(7(j-89))=0



We calculate terms in parentheses: -(7(j-89)), so:

7(j-89)

We multiply parentheses

7j-623

Back to the equation:

-(7j-623)



We get rid of parentheses

-7j+623+21=0

We add all the numbers together, and all the variables

-7j+644=0

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

-7j=-644

j=-644/-7

j=+92

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