SOLUTION: One number is three less than the other. Their sum is 21. find the numbers.

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Question 390774: One number is three less than the other. Their sum is 21. find the numbers.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
One number is three less than the other.
Their sum is 21. find the numbers.
Equations:
x+y = 21
x = y-3
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Rearrange:
x + y = 21
x - y = -3
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Add and solve for "x":
2x = 18
x = 9
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Since x+y = 21, y = 12
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Cheers,
Stan H.
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