document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=23500>Question 23500</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i need help....choose a method to slove the linear system. ( the two equations are together)\r<BR>\n" );
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document.write( "8x+y=15<BR>\n" );
document.write( "2x+2y=9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #12283 by </B><A HREF=/tutors/aboutme.mpl?userid=elima><B>elima(1433)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=elima><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=12283\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 8x+y=15<BR>\n" );
document.write( "2x+2y=9\r<BR>\n" );
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document.write( "There are different ways to solve this,I'll solve by substitution.<BR>\n" );
document.write( "Solve eq.1 8x+y=15 for y;<BR>\n" );
document.write( "8x+y-8x=15-8x<BR>\n" );
document.write( "y=15-8x<BR>\n" );
document.write( "Now substitute this for y in the 2nd eq.;<BR>\n" );
document.write( "2x+2(15-8x)=9<BR>\n" );
document.write( "2x+30-16x=9<BR>\n" );
document.write( "-14x+30=9<BR>\n" );
document.write( "-14x=9-30<BR>\n" );
document.write( "-14x=-21<BR>\n" );
document.write( "x=1.5<BR>\n" );
document.write( "Now that we have x we can plug that into eq.1 to get y;<BR>\n" );
document.write( "8(1.5)+y=15<BR>\n" );
document.write( "12+y=15<BR>\n" );
document.write( "y=15-12<BR>\n" );
document.write( "y=3<BR>\n" );
document.write( "So the answer is;<BR>\n" );
document.write( "x=1.5<BR>\n" );
document.write( "y=3<BR>\n" );
document.write( "Hope you understand!<BR>\n" );
document.write( "=)<BR>\n" );
document.write( " </SPAN>\n" );
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