document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=60922>Question 60922</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/1888469544/algebrahomeworkh>beginning algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> 21. 3x+5y=15<BR>\n" );
document.write( "23. -4x+3y=12<BR>\n" );
document.write( "25. x-7y=3   I am not sure how  to solve with 2 variables.  please help me!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #41873 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=41873\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ONE EQUATION WITH TWO VARIABLES CANNOT BE UNIGUELY SOLVED BECAUSE <BR>\n" );
document.write( "THERE ARE MANY DIFFERWENT COMBINATIONS  OF VALUES FOR EACH VARIABLE.<BR>\n" );
document.write( "EXAMPLE 3X+5Y=15 IF X=5 THEN Y=0 OR IF X=0 THEN Y=3 <BR>\n" );
document.write( "IF YOUR TRYING TO SOLVE FOR X OR Y THE <BR>\n" );
document.write( "3X+5Y=15<BR>\n" );
document.write( "3X=15-5Y<BR>\n" );
document.write( "X=15/3-5Y/3<BR>\n" );
document.write( "X=5-5Y/3<BR>\n" );
document.write( "OR  SOLVING FOR Y THEN<BR>\n" );
document.write( "3X+5Y=15 <BR>\n" );
document.write( "5Y=15-3X<BR>\n" );
document.write( "Y=15/5-3X/5<BR>\n" );
document.write( "Y=3-3X/5\r<BR>\n" );
document.write( "\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );