1)184869
2)945570
3)732170
4)257304
5)945296
6)184868
7)945570
8)361
Ответ:
1. х = 8/9
2. х = 2
Пошаговое объяснение:
1. 4 1/9 - 2х = 2 1/3
-2х = 7/3 - 37/9
-2х = (7*3- 37)/9
-2х = -16/9
х = -16/9 : (-2)
х = -16/9 * (-1/2)
х = 8/9
Проверим:
4 1/9 - 2*8/9 = 2 1/3
4 1/9 - 16/9 = 2 1/3
2 19/9 - 16/9 = 2 1/3
2 3/9 = 2 1/3
2 1/3 = 21/3
2. 3 3/7 : 2/7х = 3 1/3 : 5/9
2/7х = 24/7 : (10/3 : 5/9)
2/7х = 24/7 : 6
2/7х = 4/7
х = 4/7 : 2/7 = 4/7 * 7/2
х = 2
Проверим:
3 3/7 : (2/7*2) = 3 1/3 : 5/9
24/7 : 4/7 = 10/3 : 5/9
24/7 * 7/4 = 10/3 * 9/5
6 = 6