document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=259755>Question 259755</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by the elimination method 7r-4s=33 4r+7s=56\r<BR>\n" );
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document.write( "I have tried setting it up like this \r<BR>\n" );
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document.write( "7r-4s=33<BR>\n" );
document.write( "4r+7s=56<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "3r 3s=89\r<BR>\n" );
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document.write( "I don't know if I am supposed to put a + or - between the 2 and to eliminate the variables I divide by 3 and get r,s = 29.6\r<BR>\n" );
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document.write( "this does not look right. Any help on how to solve would be appreciated. Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #191208 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=191208\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "First off we want to see if we can eliminate one of the variables. <BR>\n" );
document.write( "7r-4s=33<BR>\n" );
document.write( "4r+7s=56<BR>\n" );
document.write( "Let's go for getting rid of \"s\". To do this we need to multiply the first equation by 7 and the second equation by 4 so it would turn out like this:<BR>\n" );
document.write( "49r-28s=231<BR>\n" );
document.write( "16r+28s=224<BR>\n" );
document.write( "Now we can add both of these to be:<BR>\n" );
document.write( "65r=455 Divide each side by 65 to result in:<BR>\n" );
document.write( "r=7<BR>\n" );
document.write( "Now we can plug 7 into either original equation to find \"s\".<BR>\n" );
document.write( "49-4s=33 Subtract 49 from both sides to be:<BR>\n" );
document.write( "-4s=-16 Now divide -4 into both sides to give us:<BR>\n" );
document.write( "s=4 <BR>\n" );
document.write( "You can check to see if this is right by plugging s=4 and r=7 into both equations. <BR>\n" );
document.write( "Make sense?<BR>\n" );
document.write( "RJ<BR>\n" );
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document.write( "www.math-unlock.com </SPAN>\n" );
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