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OpenStudy (anonymous):
2 3/4 + 7 4/5 = ?
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OpenStudy (anonymous):
here the answer = 11/4 + 39/5 = ((11 × 5) + (39 × 4)) / (4 × 5) = (55 + 156) / 20 = 211/20 = 211/20 = 10 11/20
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