document.write( "Question 87603: If A and B are sets whose union is B, then it must be true that... \n" ); document.write( "
Algebra.Com's Answer #63519 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
A is a subset of B
\n" ); document.write( "-----------
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );