document.write( "Question 255587: what is the solution set to:
\n" ); document.write( " 4x-y=9
\n" ); document.write( " x+3y=16 \n" ); document.write( "
Algebra.Com's Answer #187796 by palanisamy(496)\"\" \"About 
You can put this solution on YOUR website!
The given equations are,
\n" ); document.write( " 4x-y=9 ...(1)
\n" ); document.write( " x+3y=16 ...(2)
\n" ); document.write( "(1)*3=> 12x-3y=27 ...(3)
\n" ); document.write( "(2)+(3)=> 13x = 43
\n" ); document.write( " x = 43/13
\n" ); document.write( "Substituting in (1),
\n" ); document.write( " 4*(43/13)-y = 9
\n" ); document.write( " 172/13-9 = y
\n" ); document.write( " (172-117)/13 = y
\n" ); document.write( " y = 55/13
\n" ); document.write( "Therefore the solution is
\n" ); document.write( " x = 43/13 and y = 55/13 \n" ); document.write( "
\n" );