30j+42=972

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Solution for 30j+42=972 equation: 



30j+42=972

We move all terms to the left:

30j+42-(972)=0

We add all the numbers together, and all the variables

30j-930=0

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

30j=930

j=930/30

j=31

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