73,12-(5,34+13,12)= (73,12-13,12)-5,34 = 60 - 5,34 = 54,66
101,3+(84,7+1,11) = (101,3+84,7)+1,11 = 186 + 1,11 = 187,11
(47,28-34,98)+(55,02+34,98) = 47,28 - 34,98 + 55,02 + 34,98 = 47,28+55,02 = 102,3
(46,83+15,77)-(6,83-5,77) = 46,83 + 15,77 - 6,83 + 5,77 = (46,83-6,83) + (15,77+5,77 )= 40 + 21,54 = 61,54