Пошаговое объяснение:
а. -(14-4 2/9)-(20-2 7/9) = -14 + 4 2/9 - 20 + 2 7/9 = -34 + 7 = -27
б. (34-18-14)-(-34-18-14) = 34 - 18 - 14 + 34 + 18 + 14 = 68
в. (1/8-5/16)•63 = (2/16 - 5/16)*63 = -3/16 * 63 = -189/16 = -11 13/16
Пошаговое объяснение:
а. -(14-4 2/9)-(20-2 7/9) = -14 + 4 2/9 - 20 + 2 7/9 = -34 + 7 = -27
б. (34-18-14)-(-34-18-14) = 34 - 18 - 14 + 34 + 18 + 14 = 68
в. (1/8-5/16)•63 = (2/16 - 5/16)*63 = -3/16 * 63 = -189/16 = -11 13/16