document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=773076>Question 773076</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve the systems of equations using addition to elimiate one variable. if the system has no solution,indicate that it is inconsistent;if it has infinate solutions,indicate that it is dependent;if the system has one soulution,check your answer.   \r<BR>\n" );
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document.write( "5. -y=2x 3x+y=20   \r<BR>\n" );
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document.write( "6. 4x+2y=6 2x+y=3\r<BR>\n" );
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document.write( "please i really need help, if i can get this to problems done i can graduate. im not sure how do do theses problems please and thank you for your help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #471373 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=471373\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5.<BR>\n" );
document.write( " -y = 2x<BR>\n" );
document.write( " 3x + y = 20<BR>\n" );
document.write( "rearrange the 1st equation so we have:<BR>\n" );
document.write( "2x + y = 0<BR>\n" );
document.write( "Subtract this from the 2nd equation<BR>\n" );
document.write( "3x + y = 20<BR>\n" );
document.write( "2x + y = 0<BR>\n" );
document.write( "--------------Subtracting eliminates y find x<BR>\n" );
document.write( "x = 20<BR>\n" );
document.write( "find y using the 1st equation (rearranged)<BR>\n" );
document.write( "2x + y = 0<BR>\n" );
document.write( "Replace x with 20<BR>\n" );
document.write( "2(20) + y = 0<BR>\n" );
document.write( "40 + y = 0<BR>\n" );
document.write( "Subtract 40 from both sides<BR>\n" );
document.write( "y = -40<BR>\n" );
document.write( "It has one solution<BR>\n" );
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document.write( "Check this in the 2nd equation<BR>\n" );
document.write( "3x + y = 20<BR>\n" );
document.write( "Replace x and y<BR>\n" );
document.write( "3(20) - 40 = 20; confirms our solutions of x=20; y=-40<BR>\n" );
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document.write( "6.<BR>\n" );
document.write( " 4x + 2y = 6<BR>\n" );
document.write( " 2x + y = 3<BR>\n" );
document.write( "these are the same equation, if you mult the 2nd eq by 2 you get the 1st eq<BR>\n" );
document.write( "therefore it has infinite solutions </SPAN>\n" );
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