3 Answers

4/9 +7/15

The lowest common denominator is 45 (9 x 5 and 15 x 3)

4/9 becomes 20/45 and 7/15 becomes 21/45

20 + 21 = 41/45

11 years ago. Rating: 4
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41/45

11 years ago. Rating: 4
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1&1/20

11 years ago. Rating: 3
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