4j+2j+j-2j=20

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Solution for 4j+2j+j-2j=20 equation: 



4j+2j+j-2j=20

We move all terms to the left:

4j+2j+j-2j-(20)=0

We add all the numbers together, and all the variables

5j-20=0

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

5j=20

j=20/5

j=4

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