document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=480158>Question 480158</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help with solving a linear system of equation by the elmination method. <BR>\n" );
document.write( "Solve the system of equations using addition/subtraction with multiplication method. \r<BR>\n" );
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document.write( "9x+5y=2<BR>\n" );
document.write( "-11x+2y=30\r<BR>\n" );
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document.write( "The answer they give is (-2,4) but I don't get how they got it.\r<BR>\n" );
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document.write( "Can you please explain how to do it? Step by step? Please? Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #328875 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=328875\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 9x+5y=2..............(1)<BR>\n" );
document.write( "-11x+2y=30 ..........(2)\r<BR>\n" );
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document.write( "Multiply (1) by -2 and (2) by 5 then add both equations<BR>\n" );
document.write( "-18x-10y=-4<BR>\n" );
document.write( "-55x+10y=150<BR>\n" );
document.write( "-------------------- <BR>\n" );
document.write( "-73x=146<BR>\n" );
document.write( "Divide by -73 both sides<BR>\n" );
document.write( "-73x/-73=146/-73<BR>\n" );
document.write( "X=-2<BR>\n" );
document.write( "Now put the value of x in any two equations (1) or (2)<BR>\n" );
document.write( "9x+5y=2<BR>\n" );
document.write( "9(-2)+5y=2<BR>\n" );
document.write( "-18+5y=2<BR>\n" );
document.write( "Add 18 both sides of the above equation<BR>\n" );
document.write( "-18+18+5y=2+18<BR>\n" );
document.write( "5y=20<BR>\n" );
document.write( "Divide by 5 both sides<BR>\n" );
document.write( "5y/5=20/5<BR>\n" );
document.write( "y=4<BR>\n" );
document.write( "(x,y)=(-2,4)<BR>\n" );
document.write( "Check:<BR>\n" );
document.write( "Put the value of x and y in equation (1) and (2)<BR>\n" );
document.write( "9x9x+5y=2		 <BR>\n" );
document.write( "9(-2)+5(4)=2	<BR>\n" );
document.write( "-18+20=2		<BR>\n" );
document.write( "2=2	 <BR>\n" );
document.write( "-11x+2y=30<BR>\n" );
document.write( "-11(-2)+2(4)=30<BR>\n" );
document.write( "22+8=30<BR>\n" );
document.write( "30=30 </SPAN>\n" );
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