The difference of two numbers is 3. Their sum is 13. Find the numbers.

3 answers

a - b = 3
a + b = 13
How do I solve it?
Think about the numbers that add up to 13,

6 + 7
5 + 8
4 + 9
3 + 10

Which pair when one is subtracted from the other gives us 3 for an answer?