document.write( "Question 272641: the tens digit of a two digit number is 5 more than the units digit. five times the units digit is 1 less than twice the tens digit. find the number \n" ); document.write( "

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the tens digit of a two digit number is 5 more than the units digit. five times the units digit is 1 less than twice the tens digit. find the number\r
\n" ); document.write( "\n" ); document.write( "Let the number be xy\r
\n" ); document.write( "\n" ); document.write( "X=y+5\r
\n" ); document.write( "\n" ); document.write( "5y=2x-1\r
\n" ); document.write( "\n" ); document.write( "Re write these eequations \r
\n" ); document.write( "\n" ); document.write( " x-y =5------------1
\n" ); document.write( " -2x+5y = -1---------2\r
\n" ); document.write( "\n" ); document.write( "Multiply equation 1 by 2 and add it to equation 2\r
\n" ); document.write( "\n" ); document.write( "2x-2y=10\r
\n" ); document.write( "\n" ); document.write( "+3y =9\r
\n" ); document.write( "\n" ); document.write( "y=9/3
\n" ); document.write( "y=3\r
\n" ); document.write( "\n" ); document.write( "So x=8
\n" ); document.write( "The number is 83\r
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