document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=962793>Question 962793</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How to solve this linear system shown by using an elimination strategy:\r<BR>\n" );
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document.write( "5x - 4y= -3<BR>\n" );
document.write( "2x + 7y= 5\r<BR>\n" );
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document.write( "I tries my best, please correct it if i did anything wrong:\r<BR>\n" );
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document.write( "(5x - 4y= -3) * 2<BR>\n" );
document.write( "(2x + 7y= 5) * 5\r<BR>\n" );
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document.write( "= 10 - 8y= -6<BR>\n" );
document.write( "=10x + 35y= 25<BR>\n" );
document.write( "= -43y = -31<BR>\n" );
document.write( "y= -31/43<BR>\n" );
document.write( "y=0.7\r<BR>\n" );
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document.write( "5x - 4y= -3<BR>\n" );
document.write( "5x - 4 (0.7)= -3<BR>\n" );
document.write( "5x - 2.8= -3<BR>\n" );
document.write( "5x=-0.2<BR>\n" );
document.write( "x = -0.04\r<BR>\n" );
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document.write( "But when I try to verify , it wrong. help please?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #588227 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=588227\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x+-+4y=+-3 ALIGN=MIDDLE  ALT=\"5x+-+4y=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+%2B+7y=+5 ALIGN=MIDDLE  ALT=\"2x+%2B+7y=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x+-+4y=+-3 ALIGN=MIDDLE  ALT=\"5x+-+4y=+-3\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....both sides multiply by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2 ALIGN=MIDDLE  ALT=\"2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+%2B+7y=+5 ALIGN=MIDDLE  ALT=\"2x+%2B+7y=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....both sides multiply by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5 ALIGN=MIDDLE  ALT=\"5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------------------\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10x+-+8y=+-6 ALIGN=MIDDLE  ALT=\"10x+-+8y=+-6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10x+%2B+35y=+25 ALIGN=MIDDLE  ALT=\"10x+%2B+35y=+25\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10x+-+8y-10x-35y=+-6-25 ALIGN=MIDDLE  ALT=\"10x+-+8y-10x-35y=+-6-25\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-43y=+-31 ALIGN=MIDDLE  ALT=\"-43y=+-31\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=+-31%2F-43 ALIGN=MIDDLE  ALT=\"y=+-31%2F-43\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=+31%2F43%29 ALIGN=MIDDLE  ALT=\"highlight%28y=+31%2F43%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....exact solution\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=+0.72%29 ALIGN=MIDDLE  ALT=\"highlight%28y=+0.72%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >......approximate solution\r<BR>\n" );
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document.write( "now, use exact solution of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y ALIGN=MIDDLE  ALT=\"y\"   DISABLED_style= \"max-width:90%; height:auto;\" > to find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x ALIGN=MIDDLE  ALT=\"x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+%2B+7y=+5 ALIGN=MIDDLE  ALT=\"2x+%2B+7y=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+%2B+7%2831%2F43%29=+5 ALIGN=MIDDLE  ALT=\"2x+%2B+7%2831%2F43%29=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+%2B+217%2F43=+5 ALIGN=MIDDLE  ALT=\"2x+%2B+217%2F43=+5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+=+5-217%2F43 ALIGN=MIDDLE  ALT=\"2x+=+5-217%2F43\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+=+215%2F43-217%2F43 ALIGN=MIDDLE  ALT=\"2x+=+215%2F43-217%2F43\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x+=+-2%2F43 ALIGN=MIDDLE  ALT=\"2x+=+-2%2F43\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+-cross%282%29%2F%28cross%282%29%2A43%29 ALIGN=MIDDLE  ALT=\"x+=+-cross%282%29%2F%28cross%282%29%2A43%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x+=+-1%2F43%29 ALIGN=MIDDLE  ALT=\"highlight%28x+=+-1%2F43%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....exact solution\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x+=+-0.023%29 ALIGN=MIDDLE  ALT=\"highlight%28x+=+-0.023%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >......approximate solution\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );