7j-3j=20

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Solution for 7j-3j=20 equation: 



7j-3j=20

We move all terms to the left:

7j-3j-(20)=0

We add all the numbers together, and all the variables

4j-20=0

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

4j=20

j=20/4

j=5

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