document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=592766>Question 592766</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. \r<BR>\n" );
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document.write( "-8x – 4y = -68\r<BR>\n" );
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document.write( "x + 3y = 16<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #376052 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=376052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "This<BR>\n" );
document.write( "-8x – 4y = -68<BR>\n" );
document.write( "x + 3y = 16<BR>\n" );
document.write( "We can write as:<BR>\n" );
document.write( "-8x – 4y = -68<BR>\n" );
document.write( "x = 16-3y<BR>\n" );
document.write( "Now substitute:<BR>\n" );
document.write( "-8(16-3y) – 4y = -68<BR>\n" );
document.write( "Expand out:<BR>\n" );
document.write( "-128+24y-4y=-68<BR>\n" );
document.write( "Add 128 and divide by 20 to get:<BR>\n" );
document.write( "y=3<BR>\n" );
document.write( "Plug this into the original and we have:<BR>\n" );
document.write( "x=7<BR>\n" );
document.write( "Make sense?<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "www.math-unlock.com<BR>\n" );
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