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1/8 x 8/9 = 1/9 : The 8 in the numerator cancels out the 8 in the denominator.

-3/7 x 21/25 = -3 x 3/25 = -9/25 : The 7 in the denominator divides into 21 (3 times).

With multiplication of fractions then the numerators can simply be multiplied together to produce a new numerator and the denominators can also be multiplied together to produce a new denominator. At any stage simplification or cancellation can take place.

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โˆ™ 2010-02-05 19:44:34
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Q: What is 1 over 8 times 8 over 9 and - 3 over 7 times 21 over 25?
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