document.write( "Question 556624: which two numbers have the sum of 7, a difference of 7 and a product of 18? \n" ); document.write( "
Algebra.Com's Answer #362224 by richard1234(7193)\"\" \"About 
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Let a and b be the numbers. Then\r
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\n" ); document.write( "\n" ); document.write( "a+b = 7
\n" ); document.write( "a-b = 7\r
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\n" ); document.write( "\n" ); document.write( "Therefore b = 0. However if b = 0, then the product of the numbers is 0 and cannot be 18. No two numbers exist.
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