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2 October, 09:56

I'm thinking of a number. When you:

-Add 2

-Multiply by 3

-Subtract 7

-Add the original number

the final result is 27. What number did he start with?

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Answers (2)
  1. 2 October, 10:06
    0
    (x+2) * 3 - 7 + x = 27

    distribute

    3x+6-7+x = 27

    4x - 1 = 27

    add 1 to each side

    4x = 28

    divide by 4

    x=7

    The original number is 7
  2. 2 October, 12:08
    0
    Is the answer to it 7
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