Question 706803: The sum of two numbers is 19, their difference is 5,find the number Found 2 solutions by Alan3354, MathLover1:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! The sum of two numbers is 19, their difference is 5,find the number
-------------
q + r = 19
q - r = 5
-------------- Add
if their difference is , we have .....eq.2
to find the number, solve this system:
..eq.1
.....eq.2
________________________
..eq.1..solve for ....eq.1a....substitute in eq.2