cristipeterman2 cristipeterman2

25-08-2016
Mathematics

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A student evaluated -4+x for x= -9 1/2 and got the answer 5 1/2 what did the student do wrong

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Kairodon Kairodon

25-08-2016

Well, first let's plug the value of x into the equation:

-4-9 1/2= -13 1/2

The student didn't pay attention to the negative sign, what he did was 9 1/2 -4 instead of -9 1/2 -4.

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