Algebraic Expressions
Q: What is the first step when simplifying complex algebraic fractions?
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Total in three subjects = Physics only (1) + Math only (5) + Chemistry only (10) + Math & Physics only (4) + Physics & Chem only (6) + Math & Chem only (3) + all three (5) = 34. Therefore, none = 40 - 34 = 6 pupils.
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