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Find value of 4/7 + 5/8

A67/56

B56/67

C20/56

D48/67

Answer:

A. 67/56

Read Explanation:

  • a/x + b/y = (ay+bx)/xy

  • 4/7 + 5/8 = (4 x 8 + 5 x 7) / 7 x 8

  • = (32+35)/56

  • = 67/56

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The sum of the numerator and denominator of fraction is 15. If one is added to numerator and two is subtracted from denominator, the fraction will becomes 5/9.Then the value of original fraction is: