SOLUTION: The sum of two numbers is 51 and the difference is 29 . What are the numbers?

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Question 1019307: The sum of two numbers is
51
and the difference is
29
. What are the numbers?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Call the numbers x and y. Then we write
x + y = 51 and
x - y = 29
When we add these equations we get
2x = 80
x = 40 so that
y = 11