2 задание срочно!!!!!!!!

(6/35-4/7)-(-1.8-4.3)-5.7 6/35-4/7=6/35-20/35=-4/35 -1.8-4.3=-6.1=-61/10 -4/35-(-61/10)=-8/70+427/70=419/70 5.7=57/10 419/70-57/10=419/70-23883/70=-23464/70=-335.2