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21 October, 23:17

The sum of two numbers is 13. If one number is subtracted from the other, the result is - 3. Find the number

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Answers (2)
  1. 21 October, 23:44
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    5, 8. The two numbers are '5', and '8'. 5+8=13, while 5-8 = - 3.
  2. 22 October, 02:32
    0
    Let a>b

    a+b=13 and b-a=-3 solve the first for b

    b=13-a and use this b in the second equation ...

    (13-a) - a=-3

    13-2a=-3

    -2a=-16

    a=8, and since b=13-a,

    b=5

    b+a=13, 5+8=13, 13=13

    b-a=-3, 5-8=-3, - 3=-3
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