Odpowiedź:
a) 3 7/8 - 1/4 =
= 3 7/8 - 2/8 =
= 3 5/8
b) 6 9/16 - 1/2 =
= 6 9/16 - 8/16 =
= 6 1/16
c) 3 7/10 - 1 2/5 =
= 3 710 - 1 4/10 =
= 2 3/10
d) 6 9/14 - 2 3/7 =
= 6 9/14 - 2 6/14 =
= 4 3/14
