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 #614110 by addingup(3677)![]() ![]() You can put this solution on YOUR website! 10x+y= 12 \n" ); document.write( "10x= y-2 Let's go back to the first equation and plug in this value for 10x \n" ); document.write( "y-2+y= 12 Add 2 on both sides and ys on left \n" ); document.write( "2y= 14 Divide both sides by 2 \n" ); document.write( "y= 7 \n" ); document.write( "---------------- \n" ); document.write( "The problem says: \n" ); document.write( "10x= y-2 And now we say that y= 7, so 10x= 7-2= 5. Now back to the first equation with these values: \n" ); document.write( "10(5)+7= 57 is your number. \n" ); document.write( " |