81=3(j+9)

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Solution for 81=3(j+9) equation: 



81=3(j+9)

We move all terms to the left:

81-(3(j+9))=0



We calculate terms in parentheses: -(3(j+9)), so:

3(j+9)

We multiply parentheses

3j+27

Back to the equation:

-(3j+27)



We get rid of parentheses

-3j-27+81=0

We add all the numbers together, and all the variables

-3j+54=0

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

-3j=-54

j=-54/-3

j=+18

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