81-j=2j+9

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Solution for 81-j=2j+9 equation: 



81-j=2j+9

We move all terms to the left:

81-j-(2j+9)=0

We add all the numbers together, and all the variables

-1j-(2j+9)+81=0

We get rid of parentheses

-1j-2j-9+81=0

We add all the numbers together, and all the variables

-3j+72=0

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

-3j=-72

j=-72/-3

j=+24

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