Odpowiedź:
Szczegółowe wyjaśnienie:
1/5+3/5=4/5
2/3 +3/5=10/15+9/15=19/15=1 4/15
3/7 + 2/9=27/63+ 14/63=41/63
3/4-1/4=2/4=1/2
3/8-2/3=9/24- 16/24=-7/24
1/5- 3/13=13/65- 15/65=-2/65
5/6+5/8=40/48+30/48=70/48=1 22/48
3/10-17/35=105/350- 170/350=- 65/350
a) 1/5 + 3/5= 4/5
b) 2/3 + 3/5= 10/15 + 9/15= 19/15= 1 i 4/15
c) 3/7 + 2/9= 27/63 + 14/63= 41/63
d) 3/4 - 1/4= 2/4= 1/2
e) 3/8-2/3= 9/24 - 16/24 = - 7/24
f) 1/5- 3/13= 13/65- 15/65= - 2/65
g) 5/6 + 5/8= 20/24 + 15/24= 35/24= 1 i 11/24
h) 3/10 - 17/35= 21/70 - 34/70 = - 13/70
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Odpowiedź:
Szczegółowe wyjaśnienie:
1/5+3/5=4/5
2/3 +3/5=10/15+9/15=19/15=1 4/15
3/7 + 2/9=27/63+ 14/63=41/63
3/4-1/4=2/4=1/2
3/8-2/3=9/24- 16/24=-7/24
1/5- 3/13=13/65- 15/65=-2/65
5/6+5/8=40/48+30/48=70/48=1 22/48
3/10-17/35=105/350- 170/350=- 65/350
Odpowiedź:
a) 1/5 + 3/5= 4/5
b) 2/3 + 3/5= 10/15 + 9/15= 19/15= 1 i 4/15
c) 3/7 + 2/9= 27/63 + 14/63= 41/63
d) 3/4 - 1/4= 2/4= 1/2
e) 3/8-2/3= 9/24 - 16/24 = - 7/24
f) 1/5- 3/13= 13/65- 15/65= - 2/65
g) 5/6 + 5/8= 20/24 + 15/24= 35/24= 1 i 11/24
h) 3/10 - 17/35= 21/70 - 34/70 = - 13/70
Szczegółowe wyjaśnienie: