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9 February, 15:23

I'm thinking of a number. When you triple my number and subtract 8 you get 7. What is my number?

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Answers (2)
  1. 9 February, 15:44
    0
    So here, just work backwards:

    7+8=15

    15/3=5
  2. 9 February, 16:23
    0
    3a - 8 = 7

    3a (-8 + 8) = (7+8)

    3a = 15

    (3a/3) = (15/3)

    a = 5

    The answer is 5
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