document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=189507>Question 189507</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve each system of equations.  Check the solutions.\r<BR>\n" );
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document.write( "2x-y=4<BR>\n" );
document.write( "x+2y=7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #142182 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley75><B>checkley75(3666)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley75><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=142182\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x-y=4<BR>\n" );
document.write( "x+2y=7  or x=7-2y<BR>\n" );
document.write( "2(7-2y)-y=4<BR>\n" );
document.write( "14-4y-y=4<BR>\n" );
document.write( "-5y=4-14<BR>\n" );
document.write( "-5y=-10<BR>\n" );
document.write( "y=-10/-5<BR>\n" );
document.write( "y=2 ans.<BR>\n" );
document.write( "2x+2=4<BR>\n" );
document.write( "2x=4+2<BR>\n" );
document.write( "2x=6<BR>\n" );
document.write( "x=6/2<BR>\n" );
document.write( "x=3 ans.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "3+2*2=7<BR>\n" );
document.write( "3+4=7<BR>\n" );
document.write( "7=7 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );