document.write( "Question 302805: how do you solve 4= x-y \n" ); document.write( "
Algebra.Com's Answer #217063 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "You don't. Two variables, one equation, no can do.\r
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