document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=538627>Question 538627</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i need help to solve the equation<BR>\n" );
document.write( "y+2x=11<BR>\n" );
document.write( "x+y=5<BR>\n" );
document.write( "using the substitution method </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #353213 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathpassionate><B>Mathpassionate(25)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathpassionate><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/cgi-bin/show-face.mpl?user=Mathpassionate><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=353213\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i need help to solve the equation<BR>\n" );
document.write( "y+2x=11<BR>\n" );
document.write( "x+y=5<BR>\n" );
document.write( "using the substitution method\r<BR>\n" );
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document.write( "Let's call y+2x=11 Equation 1<BR>\n" );
document.write( "Let's call x+y=5 Equation 2\r<BR>\n" );
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document.write( "Let's find the value of \"y\" from the Equation 1\r<BR>\n" );
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document.write( "y+2x=11<BR>\n" );
document.write( "y =11-2x  <BR>\n" );
document.write( "y =11-2x This is Equation 3\r<BR>\n" );
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document.write( "Now, let's substitute Equation 3 (y =11-2x) into the Equation 2 (x+y=5)\r<BR>\n" );
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document.write( "x+y=5<BR>\n" );
document.write( "x+(11-2x)=5<BR>\n" );
document.write( "x+11-2x=5<BR>\n" );
document.write( "x-2x=5-11<BR>\n" );
document.write( "-1x=-6<BR>\n" );
document.write( "x= (-6)/(-1)\r<BR>\n" );
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document.write( "x= 6/1 (two negative signs make the fraction positive)\r<BR>\n" );
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document.write( "x= 6\r<BR>\n" );
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document.write( "Now, let's substitute this value (x =6) into the Equation 3 (y =11-2x)\r<BR>\n" );
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document.write( "y =11-2x<BR>\n" );
document.write( "y =11-2*6<BR>\n" );
document.write( "y =11-12<BR>\n" );
document.write( "y = -1\r<BR>\n" );
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document.write( "So, the answers are:\r<BR>\n" );
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document.write( "x= 6<BR>\n" );
document.write( "y = -1\r<BR>\n" );
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document.write( "Any questions, please feel free to ask me.<BR>\n" );
document.write( "  \r<BR>\n" );
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document.write( " </SPAN>\n" );
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