document.write( "Question 769356: the middle digit of 3 digit number is 8 and the sum of the digits is 18. the difference between the number and the number formed by reversing the digits is 198.find the number. \n" ); document.write( "
Algebra.Com's Answer #468804 by lwsshak3(11628)\"\" \"About 
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the middle digit of 3 digit number is 8 and the sum of the digits is 18. the difference between the number and the number formed by reversing the digits is 198.find the number.
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\n" ); document.write( "let u=units digit
\n" ); document.write( "t=tens digit=8
\n" ); document.write( "h=hundreds digit
\n" ); document.write( "..
\n" ); document.write( "u+t+h=18
\n" ); document.write( "u+8+h=18
\n" ); document.write( "u+h=10
\n" ); document.write( "u=10-h
\n" ); document.write( "..
\n" ); document.write( "(100h+80+u)-(100u+80+h)=198
\n" ); document.write( "100h+80+u-100u-80-h=198
\n" ); document.write( "99h-99u=198
\n" ); document.write( "99h-99(10-h)=198
\n" ); document.write( "99h-990+99h=198
\n" ); document.write( "198h=990+198=1188
\n" ); document.write( "h=1188/198=6
\n" ); document.write( "u=10-h=4
\n" ); document.write( "t=8
\n" ); document.write( "number: 684
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