Ответ:
Пошаговое объяснение:
№ 1
0,25х * 1 1/3 = 2 5/6 * 2/17
25/100х * 4/3 = 17/6 * 2/17
1/4х * 4/3 = 1/3
1/4х = 1/3 : 4/3
1/4х = 1/3 * 3/4
1/4х = 1/4
х = 1/4 : 1/4
х = 1/4 * 4/1
х = 1
--------------------------------------------------------
№ 3
1) 3/324 = 12/х
3х = 12 * 324
3х = 3888
х = 3888 : 3
х = 1296
2) 2/60 = 8/х
2х = 8 * 60
2х = 480
х = 480 : 2
х =240 дней