document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=531433>Question 531433</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by substitution method\r<BR>\n" );
document.write( "\n" );
document.write( "0.1x+0.3y=-0.7<BR>\n" );
document.write( "0.9x-0.2y=8.2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #350451 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=350451\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve by substitution method <BR>\n" );
document.write( "0.1x+0.3y=-0.7<BR>\n" );
document.write( "0.9x-0.2y=8.2<BR>\n" );
document.write( "----<BR>\n" );
document.write( "1st: Get rid of all those decimals<BR>\n" );
document.write( "x + 3y = -7<BR>\n" );
document.write( "9x - 2y = 82<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Multiply the 1st equation by \"9\" to get:<BR>\n" );
document.write( "9x + 27y = -63<BR>\n" );
document.write( "9x -  2y = 82<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Subtract and solvd for \"y\":<BR>\n" );
document.write( "29y = 145<BR>\n" );
document.write( "y = 5<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Solve for \"x\":<BR>\n" );
document.write( "x + 3y = -7<BR>\n" );
document.write( "x + 15 = -7<BR>\n" );
document.write( "x = -22/3<BR>\n" );
document.write( "================<BR>\n" );
document.write( "cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============= </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );