document.write( "Question 551481: So I have been doing some workbooks to refresh myself in algebra lately to get back into school and a ran into a problem that for the life of me I cannot understand, its a Linear Equation that in order to find the value of X you have to eliminate the fractions to break it down, now the question in the book reads:\r
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document.write( "\"Solve The Following Equation: 5 - (1/6)x = {-(2/3)}x \"\r
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document.write( "now i have worked it down several times but it never matched what the answer in the workbook of \" 30-x=9x \" \r
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document.write( "from what the book says it should be its easy to find the solution is \" X=3 \" but when I work down the original equation I get this:\r
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document.write( "5 - (1/6)x = {-(2/3)}x ***convert to fractions**\r
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document.write( "5/1 - x/6 = -(3x/2) **next multiplied each term by the LCD of 6,or 6/1**\r
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document.write( "5/1*6/1 - x/6*6/1 = {-(3x/2)}*6/1 ***ok......\r
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document.write( " here is where i am confused, after canceling out the denominators my ending equation is \" 30-x= -9x \" now it has been along time since i have done any math assignments but i thought a negative multiplied by a positive stayed a negative # but my book says it becomes positive? is that right? Is -3x*6= to 9x? if so why? i thought like-signs always made a positive in multiplication
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Algebra.Com's Answer #359757 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! not wishing to demean your book, but...substituting the \"solution\" into the original equation\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5 - (1/6)(3) = {-(2/3)}(3) ___ 5 - (1/2) = -(6/3)...I don't think so...\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\"Solve The Following Equation: 5 - (1/6)x = {-(2/3)}x \" \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiplying by 6 to clear fractions ___ 30 - x = -4x ___ x = -10\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "something is amiss, but what?\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the only \"glitch\" I could see is ___ how did {-(2/3)}x become (-3x/2) between your 1st and 2nd step? \n" ); document.write( " |