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Relative calculations with TI-Collège Plus calculator

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weshwesh974 -  
Hello,

I would like to know how to calculate this on the TI-Collège Plus calculator: (+12)+(-15).
Because when I enter this calculation, it says SYNTAX Error.
Do I need to do something special, or is it that the calculator can't perform this calculation?
Please respond quickly!!! Thank you in advance.

4 answers

  1.  dodo 25
    Hello,
    is the least used for -15 the same as the one for doing the calculations?
    3. weshwesh974 Author
      Thank you, I've finally found the solution!! Thanks, it works.