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11 June, 02:53

The sum of - 4 and 8 times a number is multiplied by 3. The result is 15 less that 25 times the number. What is the number?

A) - 12

B) 6/7

C) 0

D) 3

E) none of the above

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Answers (1)
  1. 11 June, 02:59
    0
    3 (-4 + 8x) = 25x - 15

    -12 + 24x = 25x - 15

    25x - 24x = - 12 + 15

    x = 3

    answer is

    D) 3
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