Lorenzo went to the store with 20$. He bought some cans of soup for 2$ each and a gallon of milk for 3$. He had 1$ left over.
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The given equation is
Here we have to solve for n. First we need to get rid of the denominators and for that we do cross multiplication .
Now we need to isolate n. And for that we need to get rid of 12, by dividing both sides by 12
And that's the required value of n .