document.write( "Question 51696: Hi,\r
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document.write( "I've been working on this problem for a while, and am still getting an answer than doesn't work when I check/proof it. Here's how I've been trying to solve it: \r
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document.write( "5(3 - 2x) = 4(4x + 20) or
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document.write( "15 - 10x = 16x + 80 or
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document.write( "-65 = 26x or
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document.write( "x = -65/26 \r
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document.write( "and then to proof
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document.write( "5(3 - 2(-65/26)) = 4(4-65/26)+ 20) or
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document.write( "5(78/26 - 130/26) = 4(260/26 + 520/26) or
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document.write( "-260/26 = 3120 \r
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document.write( "The problem is:\r
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document.write( "\"5(3 - 2x) = 4(4x + 20)\"\r
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document.write( "It looks so simple... what am I doing wrong?\r
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document.write( "Thanks,
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document.write( "~ Jasmine \n" );
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Algebra.Com's Answer #34487 by tutorcecilia(2152)![]() ![]() You can put this solution on YOUR website! Your answer is correct: \n" ); document.write( "5(3 - 2x) = 4(4x + 20) or \n" ); document.write( "15 - 10x = 16x + 80 or \n" ); document.write( "-65 = 26x or \n" ); document.write( "x = -65/26 \n" ); document.write( "x=-2.5 [Decimal form is easier to check]\r \n" ); document.write( "\n" ); document.write( ".\r \n" ); document.write( "\n" ); document.write( "and then to proof \n" ); document.write( "5(3 - 2(-2.5)) = 4(4(-2.5)+ 20) [Check by plugging -2.5 back into the equation] \n" ); document.write( "40=40 [Checks out] \n" ); document.write( " |