SOLUTION: the sume of two numbers is 28, their difference is 2. what are the numbers?

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Question 244172: the sume of two numbers is 28, their difference is 2. what are the numbers?
Answer by richwmiller(17219) About Me  (Show Source):
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the sum of two numbers is 28, their difference is 2. what are the numbers?
x+y=28
x-y=2
x=2+y
substitute for x in equation one
2+y+y=28
y+y=26
2y=26
y=13
x=2+13
x=15
check
13+15=28
15-13=2