document.write( "Question 1152569: Use substitution to solve the system\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "x- 3y = 7
\n" ); document.write( "3x + 4y = 8
\n" ); document.write( "

Algebra.Com's Answer #774593 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
\"x=7%2B3y\"\r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( "\"3%287%2B3y%29%2B4y=8\", and onward...
\n" ); document.write( "
\n" );