document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=864342>Question 864342</A>: <I><SPAN STYLE=\"word-break: break-all;\"> So, we started learning about systems of equations, and I'm a bit tripped up.\r<BR>\n" );
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document.write( "{4X+2Y=6<BR>\n" );
document.write( "{-3X-7Y=1 \r<BR>\n" );
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document.write( "Using substitution how would I solve this system?\r<BR>\n" );
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document.write( "Another one that has me confused is this:\r<BR>\n" );
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document.write( "{X+Y=13<BR>\n" );
document.write( "{X-Y=2\r<BR>\n" );
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document.write( "I have tried it a couple times before, but I'm quite sure they aren't correct. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #520927 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=520927\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4x+2y=6<BR>\n" );
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document.write( "we get 2x+y=3\r<BR>\n" );
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document.write( "2	x	+		y	=	3	.............1				<BR>\n" );
document.write( "	y	=	3	+	-2	x					<BR>\n" );
document.write( "	<BR>\n" );
document.write( "	y	=	3		-2	x					<BR>\n" );
document.write( "-3	x		-7	y	=	1		.....................2			<BR>\n" );
document.write( "Substitute y in		(2)									<BR>\n" );
document.write( "-3	x		-7	(	3		-2	x	)	=	1<BR>\n" );
document.write( "-3	x		-21	+	14	x	=	1			<BR>\n" );
document.write( "-3	x		14	x	=	22					<BR>\n" );
document.write( "11	x	=	22								<BR>\n" );
document.write( "/	11										<BR>\n" );
document.write( "x=	2      										<BR>\n" );
document.write( "Plug the value of x in (1)											<BR>\n" );
document.write( "2	x	+		y	=	3					<BR>\n" );
document.write( "2	*	2      	+	1	y	=	3				<BR>\n" );
document.write( "4      	+	1	y	=	3						<BR>\n" );
document.write( "	y	=	-1      								<BR>\n" );
document.write( "/	1										<BR>\n" );
document.write( "y=	-1      										<BR>\n" );
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document.write( "x+y=13<BR>\n" );
document.write( "x-y=2<BR>\n" );
document.write( "in the second equation<BR>\n" );
document.write( "y=x-2substitute y in (1)\r<BR>\n" );
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document.write( "x+(x-2)=13\r<BR>\n" );
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document.write( "2x-2=13<BR>\n" );
document.write( "2x=15<BR>\n" );
document.write( "x=15/2\r<BR>\n" );
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document.write( "Plug x in (2)\r<BR>\n" );
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document.write( "x-y=2<BR>\n" );
document.write( "(15/2)-y=2\r<BR>\n" );
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document.write( "y= 15/2 -2\r<BR>\n" );
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document.write( "y=11/2\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );