document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=125300>Question 125300</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need you to solve each system by using substitution.\r<BR>\n" );
document.write( "\n" );
document.write( "6. y= -3x - 6 <BR>\n" );
document.write( "y= x-4\r<BR>\n" );
document.write( "\n" );
document.write( "7. y= 5x + 8<BR>\n" );
document.write( "y= -10x + 3\r<BR>\n" );
document.write( "\n" );
document.write( "8.y= -4x - 8<BR>\n" );
document.write( "y= 1/4x + 4\r<BR>\n" );
document.write( "\n" );
document.write( "9.y= 6x - 4<BR>\n" );
document.write( "y= -2x + 28\r<BR>\n" );
document.write( "\n" );
document.write( "10. y= 2/5x - 3<BR>\n" );
document.write( "y= 2x - 18\r<BR>\n" );
document.write( "\n" );
document.write( "11. y= x - 2<BR>\n" );
document.write( "2x + 2y =4\r<BR>\n" );
document.write( "\n" );
document.write( "12.y= 3x - 27<BR>\n" );
document.write( "y= 4x + 10y = 120\r<BR>\n" );
document.write( "\n" );
document.write( "13.y= 3x - 6y =30<BR>\n" );
document.write( "-y= -6x +34<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #91842 by </B><A HREF=/tutors/aboutme.mpl?userid=nadinadan><B>nadinadan(32)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nadinadan><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=91842\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> All these equations can be solved the same way:<BR>\n" );
document.write( "All you have to do is to substitute y from the first equation into the second equation:<BR>\n" );
document.write( "y=-3x-6   <BR>\n" );
document.write( "y= x-4 <BR>\n" );
document.write( "y= -3x - 6 so instead of y we can write x-4=-3x-6 so we put the x on the same side, changing the sign, x+3x=4-6, so we have 4x=-2 so x=-2/4 so x= -1/2<BR>\n" );
document.write( "Now in one of the equations, replace x with the value -1/2 and find y.<BR>\n" );
document.write( "y=-1/2-4 so in y=x-4, y=(-1-8)/2=-9/2, so y=-9/2.<BR>\n" );
document.write( "The same way you do all the exercises. Replace one variable from the first equation into the second equation and find the x and y values.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );