Pls answer these questions:
1. what no. should be added to -7/8 to get 4/9
2.The sum of two rational numbers is -1/2.

1 thought on “Pls answer these questions:<br /> 1. what no. should be added to -7/8 to get 4/9<br /> 2.The sum of two rational numbers is -1/2.”

1. Step-by-step explanation:

   Solutions:–

   1)

   Let the number should be added be X

   According to the given problem

   (-7/8)+X = 4/9

   => X = (4/9)-(-7/8)

   => X = (4/9)+(7/8)

   LCM of 9 and 8 = 72

   => X = [(4×8)+(7×9)]/72

   => X = (32+63)/72

   => X = 95/72

   The required number = 95/72

   Check:–

   (-7/8)+(95/72)

   => [(-7×9)+95]/72

   => (-63+95)/72

   => 32/72

   => 4/9

   Verified the given relation.

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   2)

   Given that

   One of the numbers be 5/6

   Let the other number be X

   Their sum = (5/6)+X

   According to the given problem

   The sum of two ratioal numbers = -1/2

   => (5/6)+X = -1/2

   =>X = (-1/2)-(5/6)

   LCM of 2 and 6 = 6

   => X = [(-1×3)-(5×1)]/6

   =>X = (-3-5)/6

   => X = -8/6

   => X = -4/3

   The required number = –4/3

   Check:–

   (5/6)+(-4/3)

   => (5-8)/6

   => -3/6

   => -1/2

   Verified the given relations in the given problem.

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