53,76: (4,248-1,56 х) + 3,8=55

53,76: (4,248-1,56 х) + 3,8=55

53.76: (4,248-1,56x) = 55-3,8

53.76: (4,248-1,56x) = 51,2

4,248-1,56x=53.76:51.2

4,248-1,56x=1.05

-1,56x=1.05-4,248

-1,56x=-3.198

x=-3.198:-1,56

x=2.05

ответ:x=2.05