Odpowiedź:
a) 1/3 + 3/4 = 4/12 + 9/12 = 13/12= 1 i 1/12
2/3 +6/7= 14/21 + 18/21= 32/21= 1 i 11/21
7/8 +5/6= 21/24 + 20/24= 41/24= 1 i 17/24
b) 5 i 1/4 + 5/6= 5 i 3/12 + 10/12=5 i 13/12= 6 i 1/12
1 i 7/9 + 2 i 3/10= 1 i 70/90 + 2 i 27/90= 3 i 97/90= 4 i 7/90
2 i 7/8 + 3 i 1/6= 2 i 21/24 + 3 i 4/24 = 5 i 25/24= 6 i 1/24
c) 8/9- 2/5= 40/45- 18/45= 22/45
7/8- 4/5= 35/40 - 32/40= 3/40
4 i 5/6 - 1/4= 4 i 10/12 - 3/12= 4 i 7/12
d) 6 i 8/9 - 1 i 1/2= 6 i 16/18 -1 i 9/18= 5 i 7/18
8 i 5/7 - 3 i 2/5= 8 i 25/35 - 3 i 14/35= 5 i 11/35
4 i 1/4 - 4 i 1/6= 4 i 3/12 - 4 i 2/12= 1/12
Szczegółowe wyjaśnienie:
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Odpowiedź:
a) 1/3 + 3/4 = 4/12 + 9/12 = 13/12= 1 i 1/12
2/3 +6/7= 14/21 + 18/21= 32/21= 1 i 11/21
7/8 +5/6= 21/24 + 20/24= 41/24= 1 i 17/24
b) 5 i 1/4 + 5/6= 5 i 3/12 + 10/12=5 i 13/12= 6 i 1/12
1 i 7/9 + 2 i 3/10= 1 i 70/90 + 2 i 27/90= 3 i 97/90= 4 i 7/90
2 i 7/8 + 3 i 1/6= 2 i 21/24 + 3 i 4/24 = 5 i 25/24= 6 i 1/24
c) 8/9- 2/5= 40/45- 18/45= 22/45
7/8- 4/5= 35/40 - 32/40= 3/40
4 i 5/6 - 1/4= 4 i 10/12 - 3/12= 4 i 7/12
d) 6 i 8/9 - 1 i 1/2= 6 i 16/18 -1 i 9/18= 5 i 7/18
8 i 5/7 - 3 i 2/5= 8 i 25/35 - 3 i 14/35= 5 i 11/35
4 i 1/4 - 4 i 1/6= 4 i 3/12 - 4 i 2/12= 1/12
Szczegółowe wyjaśnienie:
Odpowiedź:
Szczegółowe wyjaśnienie: