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Solving Systems of Equations by Elimination http://www.khanacademy.org/video/solving-systems-of-equations-by-elimination ---------------------------------------------------------------------------- يتناول هذا الفيديو مسألة توضح طريقة حل نظام من المعادلات بطريقة الحذف ---------------------------------------------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org