document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=181211>Question 181211</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/1602773033/algebrahomeworkh>saxon algebra 2</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system of equations by substitution.<BR>\n" );
document.write( "3y-4x=-1<BR>\n" );
document.write( "y-5x=-15<BR>\n" );
document.write( "I worked it out to (4,5).  Am I right? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #135875 by </B><A HREF=/tutors/aboutme.mpl?userid=HyperBrain><B>HyperBrain(694)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=HyperBrain><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=135875\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (1)3y-4x=-1<BR>\n" );
document.write( "(2)y-5x=-15<BR>\n" );
document.write( "**<BR>\n" );
document.write( "From (2), y=5x-15. Substituting this to (1) we have.\r<BR>\n" );
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document.write( "3(5x-15)-4x=-1<BR>\n" );
document.write( "(15x-45)-4x=-1<BR>\n" );
document.write( "11x-45=-1<BR>\n" );
document.write( "11x=44<BR>\n" );
document.write( "x=4\r<BR>\n" );
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document.write( "y=5x-15=5(4)-15=20-15=5\r<BR>\n" );
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document.write( "Therefore, the solution set is {(4,5)} Thus you are correct.\r<BR>\n" );
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document.write( "Power up,<BR>\n" );
document.write( "HyperBrain!\r<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );