(2 целых 13/ 5/12)): (-3целых 3/4) + 9 целых 3/4: - вопрос №722975921351233493413 от ира1288 03.11.2021 21:13

Question

Математика: (2 целых 13/ 5/12)): (-3целых 3/4) + 9 целых 3/4: (-13) решите по действиям вам

ира1288 · Answer

(2 13/48 - (-2 5/12)) : (-3 3/4) + 9 3/4 : (-13) = - 2

1) 2 13/48 - (-2 5/12) = 2 13/48 + 2 20/48 = 4 33/48 = 4 11/16
2) 4 11/16 : (-3 3/4) = 75/16 : (-15/4) = 75/16 * (-4/15) = - (5*1)/(4*1) = - 5/4 =
- 1 целая 1/4
3) 9 3/4 : (-13) = 39/4 * (-1/13) = - (3*1)/(4*1) = - 3/4
4) - 1 1/4 + (-3/4) = - 1 4/4 = - 2