document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=189432>Question 189432</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by addition or subtraction and check result<BR>\n" );
document.write( "3x+2y=23<BR>\n" );
document.write( "x+y=8 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #142122 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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=142122\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Tahoma\" size=1.5><BR>\n" );
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document.write( "Given:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=system%283x%2B2y=23%28red%28EQN1%29%29%2Cx%2By=8%28red%28EQN2%29%29%29 ALIGN=MIDDLE  ALT=\"system%283x%2B2y=23%28red%28EQN1%29%29%2Cx%2By=8%28red%28EQN2%29%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=red%28EQN2%29 ALIGN=MIDDLE  ALT=\"red%28EQN2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > by 3, <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2By=8 ALIGN=MIDDLE  ALT=\"x%2By=8\"   DISABLED_style= \"max-width:90%; height:auto;\" >x<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" > ==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2B3y+=24 ALIGN=MIDDLE  ALT=\"3x%2B3y+=24\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "then subtract from <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=red%28EQN1%29 ALIGN=MIDDLE  ALT=\"red%28EQN1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, we get\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2B2y=23 ALIGN=MIDDLE  ALT=\"3x%2B2y=23\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3x-3y=-24 ALIGN=MIDDLE  ALT=\"-3x-3y=-24\"   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=-y=-1 ALIGN=MIDDLE  ALT=\"-y=-1\"   DISABLED_style= \"max-width:90%; height:auto;\" > ---> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=red%28y=1%29 ALIGN=MIDDLE  ALT=\"red%28y=1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, subst. in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=red%28EQN2%29 ALIGN=MIDDLE  ALT=\"red%28EQN2%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=x%2Bhighlight%281%29=8 ALIGN=MIDDLE  ALT=\"x%2Bhighlight%281%29=8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=8-1=red%287%29 ALIGN=MIDDLE  ALT=\"x=8-1=red%287%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Then, the 2 lines intersect at point <font color=blue>(7,1)</font>\r<BR>\n" );
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document.write( "Let's see,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28400%2C400%2C-5%2C10%2C-5%2C15%2Cgraph%28400%2C400%2C-5%2C10%2C-5%2C15%2C%2823-3x%29%2F2%2C8-x%29%2Cblue%28circle%287%2C1%2C.10%29%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > ---> <font color=red>RED=EQN1</font>; <font color=green>GREEN=EQN2</font>\r<BR>\n" );
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document.write( "Thank you,<BR>\n" );
document.write( "Jojo</font> </SPAN>\n" );
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