document.write( "Question 1087063: 2x-5y=12
\n" ); document.write( "2y-x=7\r
\n" ); document.write( "\n" ); document.write( "According to the system of equations above, what is the value of x-3y? \n" ); document.write( "

Algebra.Com's Answer #701346 by ikleyn(52787) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "Add the two given equations (both sides), and you will get\r\n" );
document.write( "\r\n" );
document.write( "x - 3y = 19.\r\n" );
document.write( "\r\n" );
document.write( "Answer.  x - 3y = 19.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( "The lesson to learn from this solution:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "

\r\n" );
document.write( "    You don't need to solve the system to get the answer.\r\n" );
document.write( "

\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );