SOLUTION: The sum of two numbers is 32. Their difference is 10. What are the two numbers? What?

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Question 104080: The sum of two numbers is 32. Their difference is 10. What are the two numbers?
What?
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Let x and y be the two numbers.
x+y = 32
x-y = 10 Rewrite this as x = y+10 and substitute for x in the first equation.
(y+10) + y = 32 Simplify and solve for y.
2y+10 = 32 Subtract 10 from both sides.
2y = 22 Divide both sides by 2.
y = 11
x = y+10
x = 11+10
x = 21
The two numbers are: 21 and 11