document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=207645>Question 207645</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve ALL using the substitution method\r<BR>\n" );
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document.write( "x-3y=7<BR>\n" );
document.write( "-3x+16y=28\r<BR>\n" );
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document.write( "y-2x=0<BR>\n" );
document.write( "3x+7y=17\r<BR>\n" );
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document.write( "r-2s=0<BR>\n" );
document.write( "4r-3s=15\r<BR>\n" );
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document.write( "3b+2a=2<BR>\n" );
document.write( "-2b+a=8 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #157036 by </B><A HREF=/tutors/aboutme.mpl?userid=rfer><B>rfer(16322)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rfer><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=157036\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A)<BR>\n" );
document.write( "x-3y=7, x=3y+7<BR>\n" );
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document.write( "-3x+16y=28<BR>\n" );
document.write( "-3(3y+7)+16y=28<BR>\n" );
document.write( "-9y-21+16y=28<BR>\n" );
document.write( "7y=49<BR>\n" );
document.write( "y=7<BR>\n" );
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document.write( "x-3y=7<BR>\n" );
document.write( "x-3(7)=7<BR>\n" );
document.write( "x-21=7<BR>\n" );
document.write( "x=28<BR>\n" );
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document.write( "-3(28)+16(7)=28<BR>\n" );
document.write( "-84+112=28<BR>\n" );
document.write( "You try the others<BR>\n" );
document.write( "Good luck<BR>\n" );
document.write( "Bob </SPAN>\n" );
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