document.write( "Question 340928: If the sum of two numbers is 42 and the difference is 12, then what is the product of the numbers ? \n" ); document.write( "
Algebra.Com's Answer #244193 by CharlesG2(834)\"\" \"About 
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If the sum of two numbers is 42 and the difference is 12, then what is the product of the numbers ?\r
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\n" ); document.write( "\n" ); document.write( "let A = one number, let B = other number
\n" ); document.write( "A + B = 42
\n" ); document.write( "A - B = 12 --> A = B + 12, substitute into A + B = 42
\n" ); document.write( "(B + 12) + B = 42
\n" ); document.write( "2B + 12 = 42
\n" ); document.write( "2B = 30 (subtract 12 from both sides)
\n" ); document.write( "B = 15\r
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\n" ); document.write( "\n" ); document.write( "A + 15 = 42
\n" ); document.write( "A = 27\r
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\n" ); document.write( "\n" ); document.write( "AB = 27 * 15 = 405
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