document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=429681>Question 429681</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2x-3y=21<BR>\n" );
document.write( "y=3-x\r<BR>\n" );
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document.write( "x=4-5y <BR>\n" );
document.write( "3x+15y=-1\r<BR>\n" );
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document.write( "5x-2y=14<BR>\n" );
document.write( "y=2x-5\r<BR>\n" );
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document.write( "help me solve these for my test tomorrow </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #298427 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=298427\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x-3y=21<BR>\n" );
document.write( "y=3-x<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Substitute for \"y\" and solve for \"x\":<BR>\n" );
document.write( "2x-3(3-x) = 21<BR>\n" );
document.write( "2x-9+3x = 21<BR>\n" );
document.write( "5x = 30<BR>\n" );
document.write( "x = 6<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve for \"y\":<BR>\n" );
document.write( "y = 3-x<BR>\n" );
document.write( "y = 3-6<BR>\n" );
document.write( "y = -3<BR>\n" );
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document.write( "x=4-5y <BR>\n" );
document.write( "3x+15y=-1<BR>\n" );
document.write( "Substitute for \"x\" and solve for \"y\":<BR>\n" );
document.write( "3(4-5y)+15y = -1<BR>\n" );
document.write( "12-15y+15y = -1<BR>\n" );
document.write( "12 = -1<BR>\n" );
document.write( "----<BR>\n" );
document.write( "There is no solution for this system of 2 equations.<BR>\n" );
document.write( "There is no point (x,y) that satisfies both equations.<BR>\n" );
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document.write( "5x-2y=14<BR>\n" );
document.write( "y=2x-5<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Substitute for \"y\" and solve for \"x\":<BR>\n" );
document.write( "5x - 2(2x-5) = 14<BR>\n" );
document.write( "5x -4x+10 = 14<BR>\n" );
document.write( "x = 4<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve for \"y\":<BR>\n" );
document.write( "y = 2x-5<BR>\n" );
document.write( "y = 2*4-5<BR>\n" );
document.write( "y = 3<BR>\n" );
document.write( "===========================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============ <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );