2 задание срочно!!!!!!!!

Question

2 задание срочно!!!!!!!!

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Answer 1

(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