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Teachers' Lounge Discussion: Explaining concept -x=2 is equal to x=-2

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From: kiran talla

To: Teacher2Teacher Public Discussion
Date: 2010012906:50:32
Subject: Re: -x=2 is equal to x=-2

Hi, Few math steps: -x = 2 =>-1 * x = 2 => (-1)* -1 * x = (-1) * 2 => 1 * x = -2 [ Rule: - * - => + and - * + => -] Here: - => minus sign + => plus sign * => multipication sign Thanks, kiran talla http://wool.ourtoolbar.com

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