X, y - the numbers
The sum of the two numbers is 9.

If one number is subtracted from the other, the result is 3.

Solve the system of equations:

The numbers are 6 and 3.
Answer:
People drank 75 cups, First find the amount of juice that Mrs. Jackson bought .Then subtract the 3 cups of juice that were left over
5 x 16=80
80-3= 77
Answer:
33%
Step-by-step explanation:
Maybe because you're finding the "difference" between the two numbers. We could also question why the answer to an addition problem is called sum.
Well, 'sum'body said that's what they should be called a long time ago, that's why we're using that term to call them now.