The sum of two numbers is 55 and the difference is 21. what are the numbers?

asked May 17, 2018 25.5k views

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A) x + y = 55
B) x -y =21

Adding both equations:
2 x = 34
x = 17
y = 38

Jillro answered May 18, 2018

7.9k points

6 votes

x + y = 55
x - y = 21
2x = 76
x =38
38 + y = 55
y =17
(38, 17)

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