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OpenStudy (anonymous):
-10-18-(15)
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OpenStudy (aroub):
-10-18-15 = -43
OpenStudy (anonymous):
How did you get that answer?
OpenStudy (aroub):
By adding them
OpenStudy (anonymous):
Ok.
OpenStudy (anonymous):
but why did we put the bracket?
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OpenStudy (aroub):
What do you mean ?
OpenStudy (anonymous):
even without the bracket we could have got the same aanswer
OpenStudy (aroub):
Yes, that's correct.
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