document.write( "Question 475534: Solve each system of equation by substitution or addition? x+y=14, 4x-y=-14 show work. \n" ); document.write( "
Algebra.Com's Answer #326088 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
x+y=14
\n" ); document.write( "4x-y=-14
\n" ); document.write( "----
\n" ); document.write( "Add and solve for \"x\":
\n" ); document.write( "5x = 0
\n" ); document.write( "x = 0
\n" ); document.write( "------
\n" ); document.write( "Substitute and solve for \"y\":
\n" ); document.write( "x +y = 14
\n" ); document.write( "0 + y = 14
\n" ); document.write( "y = 14
\n" ); document.write( "===============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );