-4(2.3x-3)-(5-2.6x)+3(0.6x-2)

- 4(2,3х - 3) - (5 - 2,6х) + 3(0,6х - 2) = - 9,2х + 12 - 5 + 2,6х + 1,8х - 6 = (- 9,2х + 2,6х + 1,8х) + (12 - 5 - 6) = - 4,8х + 1 = 1 - 4,8х.