12=j+7

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Solution for 12=j+7 equation: 



12=j+7

We move all terms to the left:

12-(j+7)=0

We get rid of parentheses

-j-7+12=0

We add all the numbers together, and all the variables

-1j+5=0

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

-j=-5

j=-5/-1

j=+5

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