Question

So 12 divided by 30 = 12 divided by (? X?)

Answer 1

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Answer:

6 × 5

Explanation:

If you want to reduce the fraction 12/30, you want to find the greatest common factor of 12 and 30. We can find that by looking at the prime factorization of each number.

12 = 2·2·3

30 = 2·3·5

The greatest common factor is 2·3 = 6. This means ...

`(12)/(30)=(12)/(6*5)`

The product of interest is 6 × 5.

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Additional comment

Any of the factor pairs of 30 could be used. Only the one shown is useful for reducing the fraction to lowest terms.

30 = 1×30 = 2×15 = 3×10 = 5×6