Răspuns:
Explicație pas cu pas:
a = -3^3 + 2^40 : 2^36 + 5 = -27 + 2^4 + 5 = -27 + 16 + 5 = -27 + 21 = -6
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b = (2/5 - 1/7) : (1/7 + 1/2 - 3/5) * 1/72
= (14/35 - 5/35) : (10/70 + 35/70 - 42/70)*1/72
= 9/35 : 3/70 * 1/72 = 9/35 * 70/3 *1/72 = 1/12
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N = 1/(1/12) + 6 = 12 + 6 = 18 divizibil cu 9
