document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=701141>Question 701141</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me solve this equation of linear functions using substitution?\r<BR>\n" );
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document.write( "3x + 4y = 6<BR>\n" );
document.write( "3x - 4y = 30\r<BR>\n" );
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document.write( "Thank you. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #432237 by </B><A HREF=/tutors/aboutme.mpl?userid=star68><B>star68(2)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=star68><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=432237\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3x + 4y = 6 ...equation 1<BR>\n" );
document.write( "3x - 4y = 30 ...equation 2<BR>\n" );
document.write( " Subtitute eq1+eq2<BR>\n" );
document.write( "3x+3x = 6+30<BR>\n" );
document.write( "6x=36<BR>\n" );
document.write( "x=36/6<BR>\n" );
document.write( "x=6<BR>\n" );
document.write( " Substitute x=6 into equation 2<BR>\n" );
document.write( "3(6)-4y = 30<BR>\n" );
document.write( "18-4y=30<BR>\n" );
document.write( "-4y=30-18<BR>\n" );
document.write( "-4y=12<BR>\n" );
document.write( "y= 12/-4<BR>\n" );
document.write( "y= -3<BR>\n" );
document.write( " Therefore, x=3 and y=-3 </SPAN>\n" );
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