Posted by Cassie on Friday, February 27, 2009 at 5:49pm.
Find three ordered pairs (a,b) that satisfy the equation 3a  5b = 9.
So far, I got (3,0). I'm having trouble finding others. Does anyone have suggestions on other easy ways to find ordered pairs besides guessandcheck? Thank you!

Algebra  Reiny, Friday, February 27, 2009 at 6:27pm
change it to
3a = 5b + 9
a = (5/3)b + 3
pick any multiple for b , eg. b = 3,3,6,6 etc and out comes the a as an integer.
Your point is when b = 0 (also a multiple of 3 btw)