skeeter: You posted an excellent response! I wonder if wmdschristie3 meant GCF=18 (which would not be correct anyway) instead of GCF=81 (which makes no sense). wmdschristie3: How do you figure the GCF is 81? IF you meant 18, then yes, 18 does divide evenly into 18 but 18 does not divide evenly into 45.
quote:Originally posted by skeeter
18/45 = (9 2)/(9 5)
so, looking above, what is the GCF (greatest common factor) of the numerator and denominator?