The sum of two numbers is 17. Their difference is 3. Find the two numbers.
- Let x and y be the two numbers.
=====
- x + y = 17
- x – y = 3
—–
- x = 3 + y
- 3 + y + y = 17
- y + y = 17 – 3
- 2y = 14
- y = 14/2
- y = 7
—–
- x + y = 17
- x + 7 = 17
- x = 17 – 7
- x = 10
- The value of x is 10 while the value of y is 7.
