(y-4097*9)+25772:68=3506
y-36873+379=3506
y-36873=3506-379
y-36873=31,27
y-31,27+36873
y=40000
Проверка
(40000-4097*9)+25772:68=3506
1)4097*9=36873
2)40000-36873=3127
3)25772:68=379
4)3127+379=3506
-2 4/5 - 1 2/5 + 3 + 2/3= -4 1/5 + 3 + 2/3= -7.2 + 2/3
1) -11,92
2) 0,2
3) 1,44/4 =0,36
4) -15
1) 4 5/12 - 2 13/24 = (4 - 2) + (5/12 - 13/24) = 2+(10/24-13/24) =
= 2 + (- 3/24) = 2 - 1/8 = 1 7/8
2) 3 1/8 : 1 7/8 = 25/8 : 15/8 = 5/3
3) 19 : 6 = 3 1/6 = 19/6
4) 4 1/8 - 5/3 = 33/8 - 5/3 = 99/24 - 40/24 = 59/24
5) 59/24 + 19/6 = 59/24 + 171/24 = 230/24
6) 230/24 * 2 2/5 = 230/24 * 12/5 = 23