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a) -12 + 10 = -2
b) 140 - 160 = -20
c) 14 + (-64) = -50
d) -9 - (-6) = -3
e) -4 1/3 - 2/3 = Nie wiem
f) -5, 125 - (-1/8) = Nie wiem
Zad 2
a) -[-(-4)] - (-3,2)= -0,8
b) 15,2 - [-(-10,75)]= 4,45
c) -45 + [-(-13 1/3)]
d) -(-39 2/5) - 57