Algebra problemDate: 6/10/96 at 10:42:59 From: Brana Subject: Algebra problem How do you solve 27x + 123 = 177? Date: 6/15/96 at 9:55:53 From: Doctor Ethan Subject: Re: Algebra problem Hey Brana, This is a pretty neat question. Fortunately, there is a pretty standard way to deal with questions like that. The first step is called: Isolate the Variable. That just means to put the x on one side and everything else on the other. To do that we have to subtract 123 from both sides. 27x + 123 = 177 27x + 123 - 123 = 177 - 123 and 123 -123 = 0 so we have 27x = 177 - 123 Now we need to find 177 - 123. I get 54, so we have 27x = 54 Now we can go to step two: Clear the Coefficient. That means to get rid of the 27 by dividing both sides by 27. 27x 54 --- = ---- 27 27 but 27x ---- = x 27 So we have x = 54/27 x = 2 Hey, we got it! Hope that helps. -Doctor Ethan, The Math Forum Check out our web site! http://mathforum.org/dr.math/ |
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