l/3=7

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Solution for l/3=7 equation: 



l/3=7

We move all terms to the left:

l/3-(7)=0

We multiply all the terms by the denominator


l-7*3=0

We add all the numbers together, and all the variables

l-21=0

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

l=21

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