document.write( "Question 212344: what 2 digit number is equal to three times the product of its digits \n" ); document.write( "
Algebra.Com's Answer #160375 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! x = the 10's digit; y = units; 10x + y = the number \n" ); document.write( ": \n" ); document.write( "what 2 digit number is equal to three times the product of its digits \n" ); document.write( "10x + y = 3(xy) \n" ); document.write( ": \n" ); document.write( "10x = 3xy - y \n" ); document.write( ": \n" ); document.write( "10x = y(3x - 1) \n" ); document.write( ": \n" ); document.write( "y = \n" ); document.write( "; \n" ); document.write( "Substitute for x and find an integer value for y \n" ); document.write( ": \n" ); document.write( "Only 2 solutions \n" ); document.write( "x = 1, y = 5; 15 is the number \n" ); document.write( "and \n" ); document.write( "x = 2, y = 4; 24 is the number \n" ); document.write( " |