document.write( "Question 405996: Hello, could you be so, so nice and help me PLEASE??? Thank you so much.
\n" ); document.write( "Alena
\n" ); document.write( "When balancing her checkbook, Allison made an error which caused her to show a balance that was $ 54.00 above the actual balance. She had accidently reversed the digits of the amount of one check. The sum of the digits of that check amount was 12.\r
\n" ); document.write( "\n" ); document.write( "a) write two equations to represent this situation
\n" ); document.write( "b) what is the best method to use to solve this system? Why?
\n" ); document.write( "c) solve the equations to determine the true amount of the check.
\n" ); document.write( "

Algebra.Com's Answer #286631 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
let x be ten's place, y in units place
\n" ); document.write( "The correct check was 10x+y
\n" ); document.write( "This was written as 10y=x
\n" ); document.write( "..
\n" ); document.write( "The error was +54
\n" ); document.write( "Original amount - error amount =54\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "The sum of the digits =12
\n" ); document.write( "x+y=12
\n" ); document.write( "10x+y-10y+x=54
\n" ); document.write( "9x-9y=54.............1
\n" ); document.write( "x+y=12..............2
\n" ); document.write( "multiply (2) by 9
\n" ); document.write( "we get
\n" ); document.write( "9x+9y=108
\n" ); document.write( "Add it to (1)
\n" ); document.write( "18x=162
\n" ); document.write( "x= 9
\n" ); document.write( "x+y=12
\n" ); document.write( "y=3\r
\n" ); document.write( "\n" ); document.write( "Actual cheque = 93
\n" ); document.write( "error check = 39
\n" ); document.write( "difference = 54
\n" ); document.write( "
\n" );