Odpowiedź:
Zad. 4
a) = 0,4 + 0,77 = 1,17
b) = 15 i 6/15 + 3 i 5/15 = 18 i 11/15
c) = 8 i 6/8 + 1 i 1/8 = 9 i 7/8
d) = 1 i 3/4 - 5/6 = 1 i 18/24 - 20/24 = 22/24 = 11/12
e) = 3 i 1/5 - 2 i 1/4 = 3 i 4/20 - 2 i 5/20 = 19/20
f) = 6,8 - 5,25 = 1,55
g) = 32/8 = 4
h) = 2/15 * 3/4 = 6/60 = 0,1
i) = 10/7 * 56/100 = 8/10 = 0,8
j) = 24/10 * 5/8 = 12/5 * 5/8 = 60/40 = 1 i 1/3
k) = 15/4 * 5/100 = 3/4 * 5/20 = 15/80 = 3/16
l) = 17/6 * 10/34 = 1/3 * 5/2 = 5/6
