SOLUTION: the number of items on two grocery lists differ by 7. the total number of items is 33. how many items are on each list?

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Question 654571: the number of items on two grocery lists differ by 7. the total number of items is 33. how many items are on each list?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
X-Y=7
X+Y=33 ADD.
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2X=40
X=40/2
X=20 ITEMS ON THE LARGEST LIST.
20+Y=33
Y=33-20
Y=13 ANS. FOR THE SHORTEST LIST.
PROOF:
20-13=7
7=7