document.write( "Question 995362: The sum of the digits of a two digit number is 12. The tens digit is 2 less than the units digit. Find the number.
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Algebra.Com's Answer #614109 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! we have the following equations \n" ); document.write( "x1 + x2 = 12 \n" ); document.write( "x1 = x2-2 \n" ); document.write( "***************************************** \n" ); document.write( "substitute for x1 in first equation \n" ); document.write( "x2-2 +x2 = 12 \n" ); document.write( "2x2 = 14 \n" ); document.write( "x2 = 7 \n" ); document.write( "x1 = 5 \n" ); document.write( "*************************************** \n" ); document.write( "the two digit number is 57 \n" ); document.write( " \n" ); document.write( " |