document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=428063>Question 428063</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am supposed to solve using the substitution method. <BR>\n" );
document.write( "5x-6y=-20<BR>\n" );
document.write( "5x+45=y<BR>\n" );
document.write( "Here is what I have tried and I think it is wrong.<BR>\n" );
document.write( "I switched the 2nd equation so that it read y=5x+45. <BR>\n" );
document.write( "It was then,<BR>\n" );
document.write( "5x-6y=-20<BR>\n" );
document.write( "y=5x+45<BR>\n" );
document.write( "Here is how I worked it out<BR>\n" );
document.write( "5x-6(5x+45)=-20<BR>\n" );
document.write( "5x-30x-270=-20<BR>\n" );
document.write( "-35x-270+270=-20+270<BR>\n" );
document.write( "-35x=250 and I divided both sides by -35 and got 7.14 but I know this is wrong and I do not know where or what I did wrong.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #297602 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=297602\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I am supposed to solve using the substitution method. <BR>\n" );
document.write( "5x-6y=-20<BR>\n" );
document.write( "5x+45=y<BR>\n" );
document.write( "Here is what I have tried and I think it is wrong.<BR>\n" );
document.write( "I switched the 2nd equation so that it read y=5x+45. <BR>\n" );
document.write( "It was then,<BR>\n" );
document.write( "5x-6y=-20<BR>\n" );
document.write( "y=5x+45<BR>\n" );
document.write( "Here is how I worked it out<BR>\n" );
document.write( "5x-6(5x+45)=-20<BR>\n" );
document.write( "5x-30x-270=-20 (SO FAR, SO GOOD!)<BR>\n" );
document.write( "-35x-270+270=-20+270  (HERE, YOU SIMPLY COMBINED THE X TERMS INCORRECTLY)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "SHOULD BE:<BR>\n" );
document.write( "-25x-270+270=-20+270<BR>\n" );
document.write( "-25x=250<BR>\n" );
document.write( "x = -10<BR>\n" );
document.write( ".<BR>\n" );
document.write( "substitute above into:<BR>\n" );
document.write( "5x+45=y<BR>\n" );
document.write( "5(-10)+45=y<BR>\n" );
document.write( "-50+45=y<BR>\n" );
document.write( "-5 = y<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );