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Example of Solving for a Variable http://www.khanacademy.org/video/example-of-solving-for-a-variable -------------------------------------- يتناول هذا الفيديو حل لمعادلة بدلالة متغير -------------------------------------- شكر خاص لمؤسسة شركاء في التنمية المستدامة -- فلسطين http://psdpal.org