(5/8х - 2/3) * 48 = 28
5*48/8х - 2*48/3 = 28
30х - 32 = 28
30х = 28 + 32
30х = 60
х = 60 : 30
х = 2
Проверка: (5/8х * 2 - 2/3) * 48 = 28
10*48/8 - 2*48/3 = 28
60 - 32 = 28 - верно.
(5/8х - 2/3) * 48 = 28
5*48/8х - 2*48/3 = 28
30х - 32 = 28
30х = 28 + 32
30х = 60
х = 60 : 30
х = 2
Проверка: (5/8х * 2 - 2/3) * 48 = 28
10*48/8 - 2*48/3 = 28
60 - 32 = 28 - верно.