document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=698206>Question 698206</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help with 7x+2y=-13<BR>\n" );
document.write( "-3x-8y=-23 I am suppose to solve the system by substitution and tell whether it has one no or infinitly solution but I don't understand how do you solve with all those x and y and how can you tell how many solutins it has  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #430518 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=430518\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 7x+2y=-13<BR>\n" );
document.write( "-3x-8y=-23 I am suppose to solve the system by substitution and tell whether it has one no or infinitly solution\r<BR>\n" );
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document.write( "7x+2y=-13<BR>\n" );
document.write( "-3x-8y=-23<BR>\n" );
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document.write( "Solve the top equation for \"y\":<BR>\n" );
document.write( "y = (-7x - 13)/2<BR>\n" );
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document.write( "Substitute for \"y\" and solve for \"x\":<BR>\n" );
document.write( "-3x - 8(-7x-13)/2 = -23<BR>\n" );
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document.write( "-3x + (56x+104)/2 = -23<BR>\n" );
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document.write( "-3x + 28x + 52 = -23<BR>\n" );
document.write( "25x = -75<BR>\n" );
document.write( "x = -3<BR>\n" );
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document.write( "Solve for \"y\":<BR>\n" );
document.write( "y = (-7x-13)/2<BR>\n" );
document.write( "y = (-7*-3-13)/2<BR>\n" );
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document.write( "y = 4<BR>\n" );
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document.write( "Ans: one solution<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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