document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=237533>Question 237533</A>: <I><SPAN STYLE=\"word-break: break-all;\"> this is a \"solving systems of equations using substitution\" question. I tried to solve it using a negative and a positive number but i cant. i've been stuck on this question for 30 minutes. Please help me as soon as possible.\r<BR>\n" );
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document.write( "2x-3y=6<BR>\n" );
document.write( "x+y=12\r<BR>\n" );
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document.write( "*when you solve x+y=12, does it become y=x-12 or y=x+12?<BR>\n" );
document.write( "*also, when you plug in for y ---> 2x-3(x-12)=6, does it become 2x-3x+12=6 or  2x-3x-12=6 or 2x+3x+12=6 or 2x+3x-12=6? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #174665 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=174665\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x-3y=6<BR>\n" );
document.write( "x+y=12 <BR>\n" );
document.write( "*when you solve x+y=12, does it become y=x-12 or y=x+12?<BR>\n" );
document.write( "*also, when you plug in for y ---> 2x-3(x-12)=6, does it become 2x-3x+12=6 or 2x-3x-12=6 or 2x+3x+12=6 or 2x+3x-12=6?<BR>\n" );
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document.write( "Solve the 2nd equation for \"y\":<BR>\n" );
document.write( "y = -x + 12<BR>\n" );
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document.write( "Substitute that into the 1st equation and solve for \"x\":<BR>\n" );
document.write( "2x -3(-x+12) = 6<BR>\n" );
document.write( "2x + 3x - 36 = 6<BR>\n" );
document.write( "5x = 42<BR>\n" );
document.write( "x = 42/5 = 8 2/5<BR>\n" );
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document.write( "Substitute that into y = -x +12 to get:<BR>\n" );
document.write( "y = -(42/5)+(60/5)<BR>\n" );
document.write( "y = 18/5 = 3 3/5<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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