How do you subtract 7gallon 3quart 1 pint and 12ounces from 2 gallon 2 quart 1 pint and 14 ounces?
just change everything to the same ounces subtract and put back
in original form.
I'm assuming that you want to subtract the 2 gal. etc. from the
7 gal. etc., otherwise you'll get a negative answer. So just like
subtracting integers, you start with the smallest and work your way
up.
12 oz. - 14 oz., you need to "borrow" from the pints. A pint is
16 oz. so that gives us 28 oz. - 14 oz. = 14 oz.
Then the pints, except you "borrowed" a pint so you need to
borrow from the quarts. 1 quart is 2 pints so that gives 2 pints -
1 pint = 1 pint.
Now for the quarts: you "borrowed a quart so you have 2 qt. -
2qt. = 0 qt.
Then 7 gal. - 2 gal. = 5 gal.
So the answer is 5 gallons 0 quarts 1 pint and 14 ounces.