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We have no way of knowing which way you've already seen, so the following method

may be repetitious, as well as extra redundant.

12/36

Look for the greatest common factor of the numerator and denominator of the fraction:

Factors of 12: 1, 2, 3, 4, 6, and 12.

Factors of 36: 1, 2, 3, 4, 9, 12, 18, and 36.

Common factors of 12 and 36: 1, 2, 3, 4, and 12.

Greatest common factor of 12 and 36: 12

Now divide numerator and denominator both by their greatest common factor:

(12/12)/(36/12) = 1/3

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13y ago

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