document.write( "Question 286359: The product of 2 consecutive integers equals the product of the number that is 3 less than the smaller one and the number that is 4 more than the larger one. What is the sum of these four numbers?\r
\n" ); document.write( "\n" ); document.write( "A.60 B. 63 C. 64 D. 71 E. None of these.
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Algebra.Com's Answer #207665 by texttutoring(324)\"\" \"About 
You can put this solution on YOUR website!
Let x= the first integer.
\n" ); document.write( " x+1= the second integer, because they are consecutive integers\r
\n" ); document.write( "\n" ); document.write( "x(x+1) = (x-3)(x+1+4)
\n" ); document.write( "\"x%5E2%2Bx+=+%28x-3%29%28x%2B5%29\"
\n" ); document.write( "\"x%5E2%2Bx+=+x%5E2+%2B+2x+-+15\"
\n" ); document.write( "\"x%5E2-x%5E2+=+2x+-+x+-+15\"
\n" ); document.write( "\"0=x-15\"
\n" ); document.write( "\"x=15\"\r
\n" ); document.write( "\n" ); document.write( "so the equation looks like this:\r
\n" ); document.write( "\n" ); document.write( "x(x+1)=(x-3)(x+5)
\n" ); document.write( "(15)(16) = (12)(20)\r
\n" ); document.write( "\n" ); document.write( "The four numbers are 15,16,12, and 20. Their sum is 63.
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