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10 September, 18:39

The sum of one fifth of a number and three is equal to half of the number. what is the number? A. 5. B. 10. C. 15 D. 20

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Answers (2)
  1. 10 September, 20:31
    0
    1/5x + 3 = 1/2x

    x/5+3 = x/2

    x/5-x/2 + 3 = 0

    2x/10-5x/10 + 3 = 0

    -3x/10 + 3=0

    -3x/10 has to equal - 3

    -3 * x = 30

    x=10
  2. 10 September, 21:33
    0
    The statement correct is: B. 10.
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