-0.4(3x-1)+8(0.8x-0.3)=5-(3.8x+4)
-0.4 (3х-1)+8 (0.8х-0.3)=5-(3.8х+4) -1.2х+0.4+6.4х-2.4=5-3.8х-4 -1.2х+6.4х+3.8х=5-4-0.4+2.4 9х=3 х=3 ответ:3