document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=806958>Question 806958</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 3 years,Carlo will be 3 times as old as his sister Daisy.<BR>\n" );
document.write( "A year ago, Carlo was 7 times old as Daisy. How old are they now<BR>\n" );
document.write( "i need a solution about \"problems involving systems of linear equations\".. 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 #486114 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=486114\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> c is carlo's age<BR>\n" );
document.write( "d is daisy's age\r<BR>\n" );
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document.write( "c+3=3(d+3).<BR>\n" );
document.write( "c-1=7(d-1), but the worded description might be ambiguous.\r<BR>\n" );
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document.write( "Organizing each equation into the same form,<BR>\n" );
document.write( "c+3=3d+9<BR>\n" );
document.write( "c-3d=9-3<BR>\n" );
document.write( "c-3d=6<BR>\n" );
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document.write( "c-1=7d-7<BR>\n" );
document.write( "c-7d=-7+1<BR>\n" );
document.write( "c-7d=-7<BR>\n" );
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document.write( "The system of equations is<BR>\n" );
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document.write( "Use any method you know to solve the system.  You could solve each equation for c and equate those expressions to solve for d; or you could subtract one equation from the other and solve for d.  You could then solve for c knowing your value for d. </SPAN>\n" );
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