document.write( "Question 938428: in a class of 30 students, 7 have tape recorders, 15 have calculators, and 2 have both. how many of the 30 students have neither. \n" ); document.write( "
Algebra.Com's Answer #571692 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
7 + 15 - 2 = 20, \"30-20\" = 10 have neither
\n" ); document.write( "0r one can think of it as:
\n" ); document.write( "(7-2) + (15-2) + 2 = 20
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