j=2j-4

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Solution for j=2j-4 equation: 



j=2j-4

We move all terms to the left:

j-(2j-4)=0

We get rid of parentheses

j-2j+4=0

We add all the numbers together, and all the variables

-1j+4=0

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

-j=-4

j=-4/-1

j=+4

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