Verified answer

The sum of two numbers is 17. Their difference is 3. Find the two numbers.​

• Let x and y be the two numbers.

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• x + y = 17
• x - y = 3

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• x = 3 + y
• 3 + y + y = 17
• y + y = 17 - 3
• 2y = 14
• y = 14/2
• y = 7

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• x + y = 17
• x + 7 = 17
• x = 17 - 7
• x = 10

• The value of x is 10 while the value of y is 7.