Ответ:
Пошаговое объяснение:
№ 1
![\frac{1\frac{1}{3} }{2\frac{5}{6} } =\frac{\frac{2}{17} }{0,25x} \frac{1\frac{1}{3} }{2\frac{5}{6} } =\frac{\frac{2}{17} }{0,25x}](https://tex.z-dn.net/?f=%5Cfrac%7B1%5Cfrac%7B1%7D%7B3%7D%20%7D%7B2%5Cfrac%7B5%7D%7B6%7D%20%7D%20%3D%5Cfrac%7B%5Cfrac%7B2%7D%7B17%7D%20%7D%7B0%2C25x%7D)
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
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№ 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