document.write( "Question 892251: y=-x+4 If y is 7? \n" ); document.write( "
Algebra.Com's Answer #540390 by algebrahouse.com(1659)\"\" \"About 
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y = -x + 4, if y is 7
\n" ); document.write( "7 = -x + 4 {substituted 7 for y}
\n" ); document.write( "3 = -x {subtracted 4 from each side}
\n" ); document.write( "x = -3 {divided each side by -1}
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