document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=120732>Question 120732</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0618250182/algebrahomeworkh>Algebra 1</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I'm confused, some of these problems I tried inputting into the solver confused me with the way it was written. There are two that confuse me a lot.\r<BR>\n" );
document.write( "\n" );
document.write( "1) First Equation: 2a=8(this is what confuses me for this problem); Second Equation: a+b=2\r<BR>\n" );
document.write( "\n" );
document.write( "2) First Equation: 2x+3y=31; Second Equation: y=x+7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #88503 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=88503\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) <BR>\n" );
document.write( "First Equation:  2a=8<BR>\n" );
document.write( "Second Equation: a+b=2 <BR>\n" );
document.write( "------------<BR>\n" );
document.write( "From the First equation a=4<BR>\n" );
document.write( "Substitute into the 2nd equation and solve for \"b\":<BR>\n" );
document.write( "4+b=2<BR>\n" );
document.write( "b = -2<BR>\n" );
document.write( "Final Solution: a=4 and b = -2<BR>\n" );
document.write( "------------------------------------------------<BR>\n" );
document.write( "2) First Equation: 2x+3y=31 <BR>\n" );
document.write( " Second Equation: y=x+7<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "Substitute y = x+7 into the 1st equation to solve for x:<BR>\n" );
document.write( "2x + 3(x+7) = 31<BR>\n" );
document.write( "2x + 3x+21 = 31<BR>\n" );
document.write( "5x = 10<BR>\n" );
document.write( "x = 2<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Substitute x=2 into y = x+7 to solve for y:<BR>\n" );
document.write( "y = 2+7 = 9<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Final Answer: x = 2 ; y = 9<BR>\n" );
document.write( "================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );