Posted by **Justine** on Monday, April 26, 2010 at 12:52pm.

Can I reduce these fractions before I multiply them together? because when i multiply them I get some huge numbers. thank you

11/52 times 39/80

21/25 times 15/28

32/121 times 33/144

16/105 times 155/93

- Math -
**Ms. Sue**, Monday, April 26, 2010 at 12:56pm
I don't think any of those fractions can be reduced.

- Math -
**PJ**, Monday, April 26, 2010 at 1:36pm
You can "reduce" before you multiply if you can find a factor of one numerator and the other denominator.

11/52 X 39/80 52 and 39 are both divisible by 13, making your problem

11/4 X 3/30

21/25 X 15/28 21 and 28 both divisible by 7; 15 and 25 are divisible by 5, making the problem 3/5 X 3/4

Your answer should be the same either way. It just makes it easier in the end.

- Math -
**bills luver**, Monday, April 26, 2010 at 3:13pm
yes u can not reduce any of the fractions which means they are not divisible by 7 15 25 and 5 ask your professor for help if needed

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