Answer:
7/12, 2/3, 3/4
Explanation:
You have to multiply to get the denominator to have the same value. Whatever you multiply the bottom by you have to do the same for the top so...
7/12 * 1 = 7/12
2/3 *4/4 = 8/12
3/4 * 3/3 = 9/12
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