20. 1f5-xy 3 (A) 2 (C)7 VNX = 12, w...
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20. 1f5-xy 3 (A) 2 (C)7 VNX = 12, where fractions are in their lowest terms, then x - y is equal to (B) 4 (D) 9

JEE/Engineering Exams
Maths
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queation is 인 ( left[5left(frac{7}{x}right] timesleft[4 times frac{1}{13}right]-1=right. ) Find ( x-y=? ) we get ( 50 frac{7}{9} times 2 frac{61}{13}=12 ) ( frac{52}{9} times frac{27}{13}=12 ) ( 4 times 3=12 ) ( 12=12 )
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