document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=197307>Question 197307</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have these 2 equations and there y slope intercept which are\r<BR>\n" );
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document.write( "2x+2y=140   y=-x+70\r<BR>\n" );
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document.write( "1x-1y=20    y=x-20\r<BR>\n" );
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document.write( "The answer for x and y are shown as x is 45  and y is 25(both positive #'s)<BR>\n" );
document.write( "I need it explained to me how the 45 and 25 are figured out.<BR>\n" );
document.write( "Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #147945 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=147945\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Problem  #1<BR>\n" );
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document.write( "(1) 2x +2y = 140<BR>\n" );
document.write( "(2) x-y =20 <BR>\n" );
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document.write( "Your  start  was  good,,(1)  becomes  y=-x+70,,,and  (2)  becomes  y = x-20<BR>\n" );
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document.write( "Setting  these  equal  to  each  other,  substitution,<BR>\n" );
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document.write( "-x+70 = x-20<BR>\n" );
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document.write( "90 = 2x<BR>\n" );
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document.write( "x=45,,,answer<BR>\n" );
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document.write( "Subst  into  (2) ,,,45 -y = 20,,,y=45-20,,,,y = 25<BR>\n" );
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document.write( "checking<BR>\n" );
document.write( "in (1)  2(45) + 2(25) = 140,,,140 =140,,,ok<BR>\n" );
document.write( "in  (2)  (45) - (25) = 20,,,20 = 20,,,ok </SPAN>\n" );
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