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7 + 5 – (3/2 * 1/4) of 2/7 + 7/2 * 1/6 equals ________.

/ Mathematics Mcqs, Simplification and Approximation / By
7 + 5 – (3/2 * 1/4) of 2/7 + 7/2 * 1/6 equals ________.

A. 12 3/88
B. 24 21/24
C. 12 25/224
D. 12 1/224
Explanation:
7 + 5 – (3/2 * 1/4) of 2/7 + 7/2 * 1/16
= 7 + 5 – (3/2 * 1/4) * 2/7 + 7/2 * 1/16 = 7 + 5 – 3/28 + 7/32
= 12 + 3/28 + 7/32 = 12 + (7 * 7 – 3 * 8)/224
= 12 + 25/224 = 12 25/224