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Multi-Step Inequalities http://www.khanacademy.org/video/multi-step-inequalities -------------------- يتناول هذا الفيديو مسألة لحل المتباينة بأكثر من خطوة -------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org