document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=391551>Question 391551</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I'm trying to help my niece with her homework and I can't remember at all how to solve this problem.\r<BR>\n" );
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document.write( "She's trying to solve this linear equation or system. She says she's supposed to get the answer by using the 3y?\r<BR>\n" );
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document.write( "2x-3y=-7 (negative 7)<BR>\n" );
document.write( "3x+y=-5 (negative 5)\r<BR>\n" );
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document.write( "I have the answer for her but would really like to know how to solve this and to show her the correct way. \r<BR>\n" );
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document.write( "Thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #277890 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=277890\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x - 3y = -7 <BR>\n" );
document.write( "3x +  y = -5 <BR>\n" );
document.write( "They probably want you to use elimination, by multiplying the 2nd equation by<BR>\n" );
document.write( "3 and adding the two equations, you will eliminate y and easily can find x<BR>\n" );
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document.write( "2x - 3y = -7<BR>\n" );
document.write( "9x + 3y = -15 (multiplied by 3)<BR>\n" );
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document.write( "11x + 0 = -22<BR>\n" );
document.write( "Divide both sides by 11, and you have<BR>\n" );
document.write( "x = -2<BR>\n" );
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document.write( "You can now find y by substituting -2 for x in the 2nd equation<BR>\n" );
document.write( "3(-2) + y = -5<BR>\n" );
document.write( "-6 + y = -5<BR>\n" );
document.write( "Add 6 to both sides<BR>\n" );
document.write( "y = -5 + 6<BR>\n" );
document.write( "y = +1<BR>\n" );
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document.write( "Check your solutions by substitution in the 1st equation<BR>\n" );
document.write( "2x - 3y = -7 <BR>\n" );
document.write( "2(-2) - 3(1) = -7<BR>\n" );
document.write( "-4 - 3 = -7; confirms our solutions of x = -2, y = 1 </SPAN>\n" );
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