document.write( "Question 372393: Hello,\r
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\n" ); document.write( "\n" ); document.write( "xy = 3
\n" ); document.write( "x + y = 4
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Algebra.Com's Answer #265251 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
1. $\"xy+=+3+\"$
\n" ); document.write( "2. $\"x+%2B+y+=+4\"$
\n" ); document.write( "From eq. 2,
\n" ); document.write( " $\"x=4-y\"$
\n" ); document.write( "Substitute into eq. 1,
\n" ); document.write( " $\"%284-y%29y=3\"$
\n" ); document.write( " $\"4y-y%5E2=3\"$
\n" ); document.write( " $\"y%5E2-4y%2B3=0\"$
\n" ); document.write( " $\"%28y-1%29%28y-3%29=0\"$
\n" ); document.write( "Two solutions,
\n" ); document.write( " $\"y-1=0\"$
\n" ); document.write( " $\"y=1\"$
\n" ); document.write( "Then
\n" ); document.write( " $\"x=3%2F1=3\"$
\n" ); document.write( "(3,1)
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\n" ); document.write( " $\"y-3=0\"$
\n" ); document.write( " $\"y=3\"$
\n" ); document.write( "Then
\n" ); document.write( " $\"x=3%2F3=1\"$
\n" ); document.write( "(1,3)
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