document.write( "Question 713078: Michael is 15 years older than his brother Rafael. However, y years ago Michael was twice as old as Rafael. If Rafael is now x years old and x > y, what is the value of x-y? \n" ); document.write( "
Algebra.Com's Answer #438291 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Michael is 15 years older than his brother Rafael. \n" ); document.write( " However, y years ago Michael was twice as old as Rafael. \n" ); document.write( " If Rafael is now x years old and x > y, what is the value of x-y? \n" ); document.write( ": \n" ); document.write( "\" Michael is 15 years older than his brother Rafael.\" Rafael is x \n" ); document.write( "m = x + 15 \n" ); document.write( ": \n" ); document.write( "\"y years ago Michael was twice as old as Rafael.\" \n" ); document.write( "m - y = 2(x - y) \n" ); document.write( "m - y = 2x - 2y \n" ); document.write( "m = 2x - 2y + y \n" ); document.write( "m = 2x - y \n" ); document.write( "Replace m with (x+15) \n" ); document.write( "x + 15 = 2x - y \n" ); document.write( "15 = 2x - x - y \n" ); document.write( "15 = x - y \n" ); document.write( " |