Find the reciprocal of the sum of 1&7/9&1&9/7
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Answer:
7&1 , 1&9, 9&7 are the reciprocals
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1 7/9 + 1 9/7 = (9+7)/9 + (7+9)/7 = 16/9 + 16/7
= (16*7 + 16*9)/9*7 = 256/63 = 256/63
Its reciprocal = 63/256
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