document.write( "Question 123840: 2x-y=-3
\n" ); document.write( "x+4y=9
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Algebra.Com's Answer #90896 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
1. $\"2x-y=-3\"$
\n" ); document.write( "2. $\"x%2B4y=9\"$
\n" ); document.write( "Let's use equation 2 to solve for x in terms of y, then substitute into 1.
\n" ); document.write( "2. $\"x%2B4y=9\"$
\n" ); document.write( " $\"x=9-4y\"$
\n" ); document.write( "1. $\"2x-y=-3\"$
\n" ); document.write( " $\"2%289-4y%29-y=-3\"$
\n" ); document.write( " $\"18-8y-y=-3\"$
\n" ); document.write( " $\"18-9y=-3\"$
\n" ); document.write( " $\"-9y=-21\"$
\n" ); document.write( " $\"highlight%28y=21%2F9=7%2F3%29\"$
\n" ); document.write( "From 2,
\n" ); document.write( " $\"x=9-4y\"$
\n" ); document.write( " $\"x=9-4%287%2F3%29\"$
\n" ); document.write( " $\"x=9-28%2F3\"$
\n" ); document.write( " $\"x=27%2F3-28%2F3\"$
\n" ); document.write( " $\"x=%2827-28%29%2F3\"$
\n" ); document.write( " $\"highlight%28x=-1%2F3%29\"$ \r
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