120 students are signing up for classes. 80 of them are signing up for a Math class (M) and 50 of them are signing up for a Biology class (B). If 37 of them are signing up for both Math and Biology, how many are signing up for neither Math nor Biology.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter9: Real Numbers And Right Triangles
Section9.4: Real Numbers
Problem 2E
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120 students are signing up for classes. 80 of them are signing up for a Math class (M) and 50 of them are signing up for a Biology
class (B). If 37 of them are signing up for both Math and Biology, how many are signing up for neither Math nor Biology. Hint:
It may help to draw the Venn diagram. 

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