document.write( "Question 98455: what are the solutions for x-y=4 \n" ); document.write( "
Algebra.Com's Answer #71623 by mathslover(157)\"\" \"About 
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Since there are 2 variables in the equation x-y=4 , you need at least 2 equations to find the values of x and y \n" ); document.write( "
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