Odpowiedź:
5.
a) - 3/4 + (- 8 5/8) + (- 6 5/6) + (- 1 3/8) =
= - 18/24 - 8 15/24 - 6 20/24 - 1 9/24 =
= - 15 62/24 = - 17 14/24 = - 17 7/12
b) - 14 1/2 + (- 7 3/5) + 8 1/5 + (- 6,3) =
= - 14 1/2 - 7 3/5 + 7 6/5 - 6 3/10 =
= - 14 1/2 + 3/5 - 6 3/10 =
= - 14 5/10 + 6/10 - 6 3/10 =
= - 20 8/10 + 6/10 = - 20 2/10 = - 20 1/5
c) 20 + (- 16,3) + 4 1/3 + (- 18 2/3) =
= 20 - 16 3/10 - 14 1/3 =
= 20 - 16 9/30 - 14 10/30 =
= 20 - 30 19/30 = - 10 19/30
d) - 0,6 + 2 3/8 + (- 7 5/8) + (- 1/2) + 0 =
= - 6/10 - 5 2/8 - 1/2 + 0 =
= - 24/40 - 5 10/40 - 20/40 =
= - 5 54/40 = - 6 14/40 = - 6 7/20
Szczegółowe wyjaśnienie:
