Ответ:
1 вариант. Подставляем A = 3/2 и B = −1/12.
A + B = 3/2 − 1/12 = 18/12 − 1/12 = 17/12.
A − B = 3/2 − (−1/12) = 18/12 + 1/12 = 19/12.
A : B = (3/2) : (−1/12) = (3/2) · (−12) = −18.
A/B = (3/2)/(−1/12) = −18.
2 вариант. Подставляем A = −9/14 и B = 3/16.
A + B = −72/112 + 21/112 = −51/112.
A − B = −72/112 − 21/112 = −93/112.
A : B = (−9/14) : (3/16) = (−9/14) · (16/3) = −24/7.
A/B = (−9/14)/(3/16) = −24/7.
