(6/35-4/7)-(-1,8-4,3)-5,7=0
(0,17-0,57)+(-6,1)-5,7=-0,4-0,4=0
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(6/35-4/7)-(-1,8-4,3)-5,7=0
(0,17-0,57)+(-6,1)-5,7=-0,4-0,4=0
= (6/35 - 20/35) - (-6,1) - 5,7 =
= -14/35 + 6,1 - 5,7 =
= -2/5 +0,4 = -0,4 + 0,4= 0