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Brain teaser – Make this equation true, 999999999999999 = 1990

Insert +, -, x or / in suitable places on the left side of = so as to make the equation true:

999999999999999 = 1990

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6 comments

  1. (9999-999)/9+999-9+9-9

  2. (9999/9999)+999+999-9

  3. 999+999-9+(9999/9999)

  4. 999+999-9+(9/9)+999-999=1990

  5. (9999/9)-(999/9)+(999-9)+(9-9)

    Brackets don’t matter

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