Question 1060913
Let n be your first integer.  Then your second integer is 5n-4. So:
n(5n-4)=105
5nē-4n-105=0
(5n+21)(n-5)=0
n=-21/5 or 5
Using the positive value for n, we get the first integer to be 5, and the second integer to be 21. ☺☺☺☺