х = 9/14
Пошаговое объяснение:
5х-2=3х-5/7
5х - 3х = 2 - 5/7
2х = 1 2/7 = 9/7
х = 9/7 : 2
х = 9/7* 1/2
Проверка:
5*9/14 - 2 = 3*9/14 - 5/7
45/14 - 2 = 27/14 - 5/7
3 3/14 - 2 = (27-2*5)/14
1 3/14 = 17/14
17/14 = 17/14
