(6\35-4\7)-(-1.8-4.3)-5.7

Question

(6\35-4\7)-(-1.8-4.3)-5.7

Answer 1

1) 6/35-20/35= -14/35= -2/5
2) 1,8+4,3-5,7=6,1-5,7=0,4
3) -2/5+4/10=-4/10+4/10=0