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[math-learn] Re: Other Subtraction methods, beyond borrowing?
Posted:
Sep 29, 2010 1:52 PM
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In algebra we 'add the opposite'
-8-(-7)
-8+7
-1
In arithmetic we can do the same
just add the opposite.
Professor Martin Weissman
Prof Weissman's Software
Cell: 347-528-7837
mathprof@hotmail.com
www.math911.com
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