j+2j=18

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Solution for j+2j=18 equation: 



j+2j=18

We move all terms to the left:

j+2j-(18)=0

We add all the numbers together, and all the variables

3j-18=0

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

3j=18

j=18/3

j=6

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