Odpowiedź:
Zad.10
a) 4 2/5 + 15/100 = 22/5 + 15/100 = 440/100 + 15/100 = 455/100 = 4 11/20
b)12 1/4 - 6 7/10 = 49/4 - 67/10 = 245/20 - 134/20 = 111/20 = 5 11/20
c) 9 1/4 - 5 1/5 = 37/4 - 26/5 = 185/20 - 104/20 = 81/20 = 4 1/20
Zad.11
a) 35/48
b) 19/12 * 5/12 = 95/144
c) 21/9 * 1/7 = 21/63 = 1/3
d)3/10 * 13/6 = 39/60 = 13/20
e)7/1 * 12/7 = 12
f)6/1 * 8/3 = 16
g)21/8 * 4/3 = 7/2 = 3 1/2
h) 36/7 * 49/18 = 14
i) 25/6 * 36/25 = 6
j) 35/16 * 16/15 * 12/7 = 4
k) 27/8 * 16/9 * 5/6 = 5
l) 18/13 * 26/9 * 19/4 = 19
liczę na naj ;)
