document.write( "Question 349411: Please help understand why in the equation (15-a)/3=-9 a=42 ; I get a=-42 \n" ); document.write( "
Algebra.Com's Answer #249765 by Earlsdon(6294)\"\" \"About 
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\"%2815-a%29%2F3+=+-9\" First, multiply both sides by 3.
\n" ); document.write( "\"15-a+=+-27\" Now subtract 15 from both sides.
\n" ); document.write( "\"-a+=+-42\" Finally, multiply both sides by -1 so you a get a positive a.
\n" ); document.write( "\"a+=+42\"
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