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b) - 2 14/15 + 0,2 = - 44/15 + 1/5 = -44/15 + 3/15 = -41/15 = - 2 11/15
c) 2,66 + (-2 1/3) = 266/100 - 5/3 = 133/50 - 5/3 = 399/150 - 250/150 = 149/150
d) 4,08 - (-3,275) = 4,08 + 3,275 = 7,355
e) - 2 1/3 - (-3,8) = -7/3 + 38/10 = -7/3 + 19/5 = -35/15 + 57/15 = 22/15 = 1 7/15
f) -14,2 - 7,87 = - 22,07