Odpowiedź:
zad 67
a)
- 7 4/9 - 2 1/6 = - 7 8/18 - 2 3/18 = - 9 11/18
b)
3 1/4 - 8 5/6 = 3 3/12 - 8 10/12 = - 5 7/12
c)
- 2 3/5 + 7 1/2 = - 2 6/10 + 7 5/10 = - 2 6/10 + 6 15/10 = 4 9/10
d)
- 3,12 - 6,1 = - 9,22
e)
6,4 - 10,25 = - 3,85
f)
4 5/6 - 8,2 = 4 5/6 - 8 2/10 = 4 5/6 - 8 1/5 = 4 25/30 - 8 6/30 =
= 4 25/30 - 7 36/30 = - 3 9/30 = - 3 3/10
