exam Maths Puzzle Numerical Ability

How do you add and subtract negative fractions

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exam Other Question

If n is any negative number, which of the following must be positive?

(A) n/2
(B) 2n
(C) n + 2
(D) n - 2
(E) 2 - n 2x2-3x3+4x+10x2-3x....