document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=508369>Question 508369</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the equations using elimination & substitution method : <BR>\n" );
document.write( "Please show the complete solution.Thank You. Urgent here. Please.Thanks again . \r<BR>\n" );
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document.write( "5x-2y=20<BR>\n" );
document.write( "x+3y=-10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #340969 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=340969\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> By Substitution Method<BR>\n" );
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document.write( "5x-2y=20 ...........(1)<BR>\n" );
document.write( "x+3y=-10 ...........(2)\r<BR>\n" );
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document.write( "Take (2)<BR>\n" );
document.write( "x+3y=-10<BR>\n" );
document.write( "x=-10-3y\r<BR>\n" );
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document.write( "Put the value of x in (1)<BR>\n" );
document.write( "5x-2y=20 ...........(1)<BR>\n" );
document.write( "5(-10-3y)-2y=20<BR>\n" );
document.write( "-50-15y-2y=20<BR>\n" );
document.write( "-17y=20+50<BR>\n" );
document.write( "-17y=70<BR>\n" );
document.write( "Divide above equation by -17<BR>\n" );
document.write( "-17y/-17=70/-17<BR>\n" );
document.write( "y=-70/17<BR>\n" );
document.write( "Put the value of y in (2)<BR>\n" );
document.write( "x+3(-70/17)=-10<BR>\n" );
document.write( "Multiply above equation by 17<BR>\n" );
document.write( "17(x+3(-70/17))=-10 * 17<BR>\n" );
document.write( "17x+3(-70)=-170<BR>\n" );
document.write( "17x-210=-170<BR>\n" );
document.write( "17x=-170+210<BR>\n" );
document.write( "17x=40<BR>\n" );
document.write( "Divide above equation by 17<BR>\n" );
document.write( "17x/17=40/17<BR>\n" );
document.write( "x=40/17\r<BR>\n" );
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document.write( "(x,y)=(40/17, -70/17)\r<BR>\n" );
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document.write( "By Elimination Method<BR>\n" );
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document.write( "5x-2y=20 ...........(1)<BR>\n" );
document.write( "x+3y=-10 ...........(2)\r<BR>\n" );
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document.write( "Multiply (2) by -5 and add to (1)<BR>\n" );
document.write( "-5(x+3y)=-10*-5<BR>\n" );
document.write( "-5x-15y=50<BR>\n" );
document.write( "5x-2y=20 ...........(1)<BR>\n" );
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document.write( "-17y=70<BR>\n" );
document.write( "Divide above equation by -17<BR>\n" );
document.write( "-17y/-17=70/-17<BR>\n" );
document.write( "y=-70/17\r<BR>\n" );
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document.write( "Again put the value of y in (2)<BR>\n" );
document.write( "x+3(-70/17)=-10<BR>\n" );
document.write( "Multiply above equation by 17<BR>\n" );
document.write( "17(x+3(-70/17))=-10 * 17<BR>\n" );
document.write( "17x+3(-70)=-170<BR>\n" );
document.write( "17x-210=-170<BR>\n" );
document.write( "17x=-170+210<BR>\n" );
document.write( "17x=40<BR>\n" );
document.write( "Divide above equation by 17<BR>\n" );
document.write( "17x/17=40/17<BR>\n" );
document.write( "x=40/17<BR>\n" );
document.write( "(x,y)=(40/17, -70/17)\r<BR>\n" );
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document.write( "Check <BR>\n" );
document.write( "Put the value of x and y in (2)<BR>\n" );
document.write( "x+3y=-10 ...........(2)<BR>\n" );
document.write( "40/17 + 3(-70/17)=-10<BR>\n" );
document.write( "40/17 - 210/17=-10<BR>\n" );
document.write( "Taking LCM<BR>\n" );
document.write( "(40-210)/17=-10<BR>\n" );
document.write( "Multiply above equation by 17 <BR>\n" );
document.write( "17*(40-210)/17=-10*17<BR>\n" );
document.write( "40-210=-10*17<BR>\n" );
document.write( "-170=-170<BR>\n" );
document.write( " </SPAN>\n" );
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