ПОМОГИТЕ ПЛИЗ! (1,2х+х+1,8х+1,2х+4,8)/4 = 3,8

(1,2x + x + 1,8x + 1,2x + 4,8)/4 = 3,8(5,2x + 4,8)/4 = 3,85,2x + 4,8 = 3,8*45,2x + 4,8 = 15,25,2x = 15,2 - 4,85,2x = 10,4x = 10,4/5,2x = 2