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Colleen N.

asked • 09/22/12

I just used your equation calculator and now I am more confused there were additional "+" signs and I don't k=know how they got there. Please help.

the equation was

3+2[10(7*5-30)-40]

and it bacame

3+2[10(35+ -30)+ -40]

Why? and How?

4 Answers By Expert Tutors

By:

Thomas D. answered • 08/03/13

Tutor
4.4 (11)

K-12 Minneapolis Public School Tutor, also Sub at Orthodox Jewish Ele

William N. answered • 09/24/12

Tutor
New to Wyzant

Former Kumon Tutor Specializing in Englsh, Math, SAT, and PSAT

William N.

Just as a disclaimer: I have never actually seen a calculator do this before and so this is simply an educated hypothesis, albeit one that is grounded in the evidence, and must be taken as such. Still, the more important part is that the second equation displayed by your calculator is identitical to the input equation and will still lead to the same answer if you know how to read it.

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09/24/12

Christopher B. answered • 09/24/12

Tutor
New to Wyzant

Tutor of Math, Spanish, English, Former Trumpet Player

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