Posted by Lynn on Saturday, July 10, 2010 at 9:09pm.
How do you simplify the following fraction;
72

68
I know the answer is
18

17
What I do not know is how this is the answer.The example I looked at did not tell me how it came to the answer. What do I do to find the answer?

Math (Algebra)  Ana, Saturday, July 10, 2010 at 9:11pm
divide the numerator by 4. Divide the denominator by 4.

Math (Algebra)  Lynn, Saturday, July 10, 2010 at 9:14pm
Thank you, but how do I determine what number to divide by? So that I an solve other fractions like this one. Must I still find the greatest common number to divide by?

Math (Algebra)  Ms. Sue, Saturday, July 10, 2010 at 9:55pm
Yes. You find the largest common divisor to reduce a fraction.
Example?
10/15
Divide by 5
10/15 = 2/3

Math (Algebra)  Quidditch, Sunday, July 11, 2010 at 12:23am
Be careful. You posted (72)/(68) reduces to (18)/(17). You had a sign change in the numerator. Probably just a typo, but you might want to check.
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