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Teachers' Lounge Discussion: Math Solving

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From: Loyd

To: Teacher2Teacher Public Discussion
Date: 2004030222:49:45
Subject: Re: math solution

On 2004030218:14:10, matt wrote: >can you please try to solve my problem? > -56=-2(5w+8)-(3w-12) > > > Thank you > A minus sign before a Parenthesis will result in every sign inside changing so: -56=-10w - 16 - 3w + 12 Collect like terms on right side -56 = -13w -4 Add +4 to each side of the equation -52 = =13w Divide both sides by -13 4 = w or w = 4 Check by pluging 4 into each w of the original eq. -56=-10(4) - 16 - 3(4) + 12 -56 = -40 -16 -12 + 12 -56 = -40 -16 -56 = -56 Checks

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