document.write( "Question 394073: The sum of two numbers is 39. One number is 7 more than the other. Find the two numbers. (Show all steps and explain them please). \n" ); document.write( "
Algebra.Com's Answer #279595 by pie90010(44)\"\" \"About 
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\n" ); document.write( "let x be one number
\n" ); document.write( "and y be the other number\r
\n" ); document.write( "\n" ); document.write( "\"x+%2B+7+=+y\"
\n" ); document.write( "line this up with the other equation
\n" ); document.write( "\"-x+%2B+y+=++7\"
\n" ); document.write( "\"+x+%2B+y+=+39\"
\n" ); document.write( "now you can Cancel the X's
\n" ); document.write( "\"2y+=+36\"
\n" ); document.write( "\"y+=+18\"
\n" ); document.write( "now that you know y, plug it in to find x
\n" ); document.write( "\"x+%2B+y+=+39\"
\n" ); document.write( "\"x+%2B+18+=+39\"
\n" ); document.write( "\"x+=+21\"\r
\n" ); document.write( "\n" ); document.write( "the 2 numbers are 21 and 18
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