Help With Math: Purveyors of MathXpert

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MathXpert: software to help you learn mathematics. Now free!

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This shows the screen after the -6 has been selected and MathXpert has again supplied a menu of possible operations. This time, the menu contains only one operation. In that menu, a question mark stands for the selected term. Now we see an example of doing something with the selected term, instead of to it.

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