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1/5 +1/7 = 12/35. You can achieve this by finding the LCM (Least Common Multiple) of 5 and 7, which is 35. Then you convert both of the denominators to 35, changing the numerators accordingly. So 1/5 would be 7/35, and 1/7 would be 5/35. 7/35 + 5/35 = 12/35.

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13y ago

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