Odpowiedź:
a) 3/4- 1/7= 21/28- 4/28= 17/28
7/10- 4/15= 21/30- 8/30= 13/30
3/14- 1/5= 15/70- 14/70= 1/70
b) 2 i 3/5 -7/10= 2 i 6/10-7/10= 1 i 16/10- 7/10= 1 i 9/10
2 i 3/8 - 1 i 5/6= 2 i 9/24- 1 i 20/24= 1 i 33/24- 1 i 20/24= 13/24
3 i 1/6 - 2 i 3/4= 3 i 2/12- 2 i 9/12= 2 i 14/12- 2 i 9/12= 5/12
Szczegółowe wyjaśnienie:
Odpowiedź:
3/4 - 1/7 = 21/28 - 4/28 = 17/28
7/10 - 4/15 = 21/30 - 8/30 = 13/30
3/14 - 1/5 = 15/70 - 14/70 = 1/70
2 i 3/5 - 7/10 = 2 i 6/10 - 7/10 = 1 i 16/10 - 7/10 = 1 i 9/10
2 i 3/8 - 1 i 5/6 = 2 i 9/24 - 1 i 20/24 = 1 i 33/24 - 1 i 20/24 = 13/24
3 i 1/6 - 2 i 3/4 = 3 i 2/12 - 2 i 9/12 = 2 i 14/12 - 2 i 9/12 = 5/12
