А)3/5×5/6=1/2
б)6/7×7/6=1
в)9/10×40/27=4/3
г)17/23×46/51=2/3
Запишите в виде дроби частное
18:5 =
![\frac{18}{5}](https://tex.z-dn.net/?f=+%5Cfrac%7B18%7D%7B5%7D+)
= 3,6
9:1 =
![\frac{9}{1}](https://tex.z-dn.net/?f=+%5Cfrac%7B9%7D%7B1%7D+)
= 9
15:8 =
![\frac{15}{8}](https://tex.z-dn.net/?f=+%5Cfrac%7B15%7D%7B8%7D+)
= 1
40:5 =
![\frac{40}{5}](https://tex.z-dn.net/?f=+%5Cfrac%7B40%7D%7B5%7D+)
= 8
представь смешанное число в виде неправильной дроби
12 1/5 =
![\frac{12*5+1}{5}](https://tex.z-dn.net/?f=+%5Cfrac%7B12%2A5%2B1%7D%7B5%7D+)
=
![\frac{61}{5}](https://tex.z-dn.net/?f=+%5Cfrac%7B61%7D%7B5%7D+)
8 1/9 =
![\frac{8*9+1}{9}](https://tex.z-dn.net/?f=+%5Cfrac%7B8%2A9%2B1%7D%7B9%7D+)
=
![\frac{73}{9}](https://tex.z-dn.net/?f=+%5Cfrac%7B73%7D%7B9%7D+)
Х меньшее поле
Х+х+28,2=156,8
2х=128,6
Х=64,3
Х+28,2=92,5