document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=141236>Question 141236</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Well i have to solve the following system of equations by substitution\r<BR>\n" );
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document.write( "0.5x-2y=1<BR>\n" );
document.write( "-3y+x=4\r<BR>\n" );
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document.write( "I understand that I must get of the the equations to equal to either x or y so i can substitute.\r<BR>\n" );
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document.write( "i'll try the second one\r<BR>\n" );
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document.write( "-3y+x=4\r<BR>\n" );
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document.write( "x=4-3y   is that right? if so, what to do next? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #102892 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=102892\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 0.5x-2y=1<BR>\n" );
document.write( "-3y+x=4 <BR>\n" );
document.write( "I understand that I must get of the the equations to equal to either x or y so i can substitute. <BR>\n" );
document.write( "i'll try the second one <BR>\n" );
document.write( "-3y+x=4 <BR>\n" );
document.write( "x=4-3y is that <BR>\n" );
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document.write( "Substitute that into 5x-2y=1 to solve for \"y\":<BR>\n" );
document.write( "0.5(4-3y)- 2y = 1<BR>\n" );
document.write( "2 - (3/2)y - 2y = 1<BR>\n" );
document.write( "-7/2 y = -1<BR>\n" );
document.write( "y = 2/7<BR>\n" );
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document.write( "Substitute into x = 4-3y<BR>\n" );
document.write( "x = 4-3(2/7)<BR>\n" );
document.write( "x = 4-6/7<BR>\n" );
document.write( "x = 22/7<BR>\n" );
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document.write( "Checking:<BR>\n" );
document.write( "0.5x-2y = 1<BR>\n" );
document.write( "0.5(22/7) -2(2/7) = 1<BR>\n" );
document.write( "11/7 - 4/7 = 1<BR>\n" );
document.write( "7/7 = 1<BR>\n" );
document.write( "1 = 1<BR>\n" );
document.write( "===========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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