Odpowiedź:
Zad.11
a)3 3/8 - 5/8 = 2 11/8 - 5/8 = 2 6/8 = 2 3/4
b)2 3/7 - 4/7 = 1 10/7 - 4/7 = 1 6/7
c)8 2/5 - 4/5 = 7 7/5 - 4/5 = 7 3/5
d)6 5/9 - 8/9 = 5 14/9 - 8/9 = 5 6/9 = 5 2/3
Zad.12
a) 3 1/4 - 3/4 = 2 5/4 - 3/4 = 2 1/4
b)5 5/8 - 7/8 = 4 13/8 - 7/8 = 4 6/8 = 4 3/4
c)7 3/5 - 4/5 = 6 8/5 - 4/5 = 6 4/5
d)5 1/4 - 2 3/4 = 4 5/4 - 2 3/4 = 2 2/4 = 2 1/2
e)7 1/5 - 3 3/5 = 6 6/5 - 3 3/5 = 3 3/5
f)9 1/8 - 2 7/8 = 8 9/8 - 2 7/8 = 6 2/8 = 6 1/4
Zad.13
1/5 + 3/5 = 4/5
2/5 + 3/5 = 5/5 = 1
2 - 3/5 = 1 2/5
3 1/5 + 3/5 = 3 4/5
7/5 - 3/5 = 4/5
1 1/5 - 3/5 = 6/5 - 3/5 = 3/5
6 2/5 - 3/5 = 5 7/5 - 3/5 = 5 4/5
4 3/5 - 3/5 = 4
Zad.14
a) 3 1/7 + 5 4/7 - 1 6/7 = 8 5/7 - 1 6/7 = 7 12/7 - 6/7 = 7 6/7
b)4 - (5 1/3 - 2 2/3) = 4 - (4 4/3 - 2 2/3) = 4 - 2 2/3 = 1 1/3
Szczegółowe wyjaśnienie:
Mam nadzieję że pomogłam :)
