3j-5=7-j

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Solution for 3j-5=7-j equation: 



3j-5=7-j

We move all terms to the left:

3j-5-(7-j)=0

We add all the numbers together, and all the variables

3j-(-1j+7)-5=0

We get rid of parentheses

3j+1j-7-5=0

We add all the numbers together, and all the variables

4j-12=0

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

4j=12

j=12/4

j=3

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