document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=791967>Question 791967</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by substitution x+2y=7 4x-3y=-5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #479806 by </B><A HREF=/tutors/aboutme.mpl?userid=waynest><B>waynest(281)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=waynest><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=479806\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  x + 2y = 7<BR>\n" );
document.write( "4x - 3y = -5<BR>\n" );
document.write( "multiply x + 2y = 7 by 4 to get 4x + 8y = 28<BR>\n" );
document.write( "subtract the second equation from this new equation<BR>\n" );
document.write( "4x + 8y = 28<BR>\n" );
document.write( "4x - 3y = -5<BR>\n" );
document.write( "11y = 33<BR>\n" );
document.write( "11y/11 = 33/11<BR>\n" );
document.write( "y = 3\r<BR>\n" );
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document.write( "first equation with value for y<BR>\n" );
document.write( "x + 2(3) = 7<BR>\n" );
document.write( "x + 6 = 7 <BR>\n" );
document.write( "x + 6 - 6 = 7 - 6<BR>\n" );
document.write( "x = 1\r<BR>\n" );
document.write( "\n" );
document.write( "check:<BR>\n" );
document.write( "1 + 2(3) = 7<BR>\n" );
document.write( "1 + 6 = 7<BR>\n" );
document.write( "7 = 7\r<BR>\n" );
document.write( "\n" );
document.write( "4(1) - 3(3) = -5<BR>\n" );
document.write( "4 - 9 = -5<BR>\n" );
document.write( "-5 = -5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );