Odpowiedź:
h) -2 7/9 + (-8 5/9) = (-11 3/9) = (-11 1/3)
i) -9,5 + (-2 1/2) = -19/2 - 5/2 = -24/2 = -12
j) 4 2/3 - (-3 5/6) = 4 2/3 + 3 5/6 = 4 4/6 + 3 5/6 = 8 3/6 = 8 1/2
k) 6 1/3 - 9,5 = 19/3 - 19/2 = -19/6 = -3 1/6
l) - 2 3/4 + 7 1/4 = - 11/4 + 29/4 = 18/4 = 4 1/2