Выполните действия (3 1/4 *(-14 4/5-4/15)+47): 5 9/10

(3 1/4 * (-14 4/5 - 4/15) + 47) : 5 9/10 = - 1/3

1) - 14 4/5 - 4/15 = - 14 12/15 - 4/15 = - 14 16/15 = - 15 1/15
2) 3 1/4 * (-15 1/15) = 13/4 * (-226/15) = - 2938/60 = - 48 58/60 = - 48 29/30
3) - 48 29/30 + 47 = - 1 29/30
4) - 1 29/30 : 5 9/10 = - 59/30 : 59/10 = - 59/30 * 10/59 = - 10/30 = - 1/3

(13/4*(-222/15-4/15)+47):59/10
(13/4*(-226/15)+47):59/10
(-2938/60+47)*10/59
-118/60*10/59
-2/6
-1/3
ответ:-1/3