Tyianna H.

asked • 11/17/12

how do I calculate intergers with variables in parentheses

How do I calculate the following:

13 - (-14) =

2 Answers By Expert Tutors


Tamara J. answered • 11/17/12

4.9 (51)

Math Tutoring - Algebra and Calculus (all levels)

Daniel T. answered • 11/17/12

5.0 (281)

ACT Math Tutor

Kathye P.

Hi, Daniel. Your explanation is on target and easy to understand. I would also encourage students to simplify to one sign in the last step. I have worked with college algebra students who still do the double sign and then get confused in more complicated problems. It also avoids the "is this a negative sign or a subtraction sign" confusion. (If asked, I tell them that a subtraction sign makes the number negative.) :-)



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