This problem appears in a middle-school mathematics textbook: Together Dan and Diane have $20. Together Diane and

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This problem appears in a middle-school mathematics textbook: Together Dan and Diane have $20. Together Diane and Donna have $15. How much do the three of them have in total? (Transition Mathematics, Second Edition, Scott Foresman Addison Wesley, 1998. Problem 5(1.19.)
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Linear Algebra

ISBN: 9780982406212

1st Edition

Authors: Jim Hefferon

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