document.write( "Question 616539: how do you solve this problem
\n" ); document.write( "7/9x - 7/3x^2
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Algebra.Com's Answer #387741 by Alan3354(69443)\"\" \"About 
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how do you solve this problem
\n" ); document.write( "7/9x - 7/3x^2
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\n" ); document.write( "Step 1, say what you want to do.
\n" ); document.write( "If you want to subtract:
\n" ); document.write( "Find a common denominator.
\n" ); document.write( "9x^2 will work
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\n" ); document.write( "7/9x - 7/3x^2
\n" ); document.write( "= \"7x%2F%289x%5E2%29+-+21%2F%289x%5E2%29\"
\n" ); document.write( "= \"%287x+-+21%29%2F%289x%5E2%29\"\r
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