Odpowiedź:
a) 1/2-3/6= 3/6-3/6=0
1/2-3/8=4/8-3/8= 1/8
4/5-19/25= 20/25-19/25 = 1/25
b) 2 i2/3 -1 i 4/5=8/3 - 9/5= 40/13- 27/15= 13/15
1i 2/6-2/3=8/6 -4/6= 4/6= 2/3
2 i 1/4-1i 6/8 =9/4- 14/8= 18/4- 14/8= 4/8= 1/2
c) 9 i 1/2-3 i 5/8= 19/2- 29/8 = 76/8- 29/8 = 47/8 = 5 i 7/8
5 i 1/10-4 i 3/5= 51/10 - 23/5 = 51/10 - 46/10 =5/10 = 1/2
2 i 1/21-1 i 5/7= 43/21 - 12/7 = 43/21- 36/21 = 7/21 = 1/3
d) 2 i 7/9-1 i 1/6= 25/9 - 7/6 =50/18 - 21/18 = 28/18= 1i 11/18
3 i 4/15-1 i 11/30= 49/15 - 11/30 = 98/30 - 11/30 = 87/30= 2 i 27/30 = 2i 9/10
2 i 7/30-1i 17/20= 67/30 - 37/20 = 134/60 - 111/60 = 23/60
Mam nadzieję że dobrze :)
