document.write( "Question 151081: x/7 - x/9 = 4 \n" ); document.write( "
Algebra.Com's Answer #111007 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "\"x%2F7-x%2F9=4\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"63%28x%2Fcross%287%29-x%2Fcross%289%29%29=63%284%29\" Multiply both sides by the LCD \"63\" to clear any fractions.\r
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\n" ); document.write( "\n" ); document.write( "\"9x-7x=252\" Distribute and multiply.\r
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\n" ); document.write( "\n" ); document.write( "\"2x=252\" Combine like terms on the left side.\r
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\n" ); document.write( "\n" ); document.write( "\"x=%28252%29%2F%282%29\" Divide both sides by \"2\" to isolate \"x\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=126\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the answer is \"x=126\"
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