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milanaagaeva3
@milanaagaeva3
August 2022
2
7
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Привести данные дроби к общему знаменателю: 1)3\7 и 2\5. 2)5\12 и 7\16. 3)13\60 и 7\15. 4)7\20 и 11\30. Заранее спасибо!!
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helena312
1) 3/7 и 2/5
3/7= (3*5)/7*5=15/35
2/5= (2*7)/5*7=14/35
2) 5/12 и 7/16
5/12=(5*4)/12*4=20/48
7/16=(7*3)/16*3=21/48
3) 13/60 и 7/15
13/60
7/15= (7*4)/15*4=28/60
4) 7/20 и 11/30
7/20=(7*3)/20*3=21/60
11/30=(11*2)/30*2=22/60
2 votes
Thanks 1
петя009
молодец
петя009
^ ^
петя009
1. 3\7 и 2\5 = 14\35 и 15\35 2. 5/12 и 7/16 = 80/192 и 84/192 3. 13/60 и 7/15 = 420/900 и 195/900 4. 7/20 и 11/30 = 210/600 и 220/600
1 votes
Thanks 1
helena312
исправь 2,3,4
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Answers & Comments
3/7= (3*5)/7*5=15/35
2/5= (2*7)/5*7=14/35
2) 5/12 и 7/16
5/12=(5*4)/12*4=20/48
7/16=(7*3)/16*3=21/48
3) 13/60 и 7/15
13/60
7/15= (7*4)/15*4=28/60
4) 7/20 и 11/30
7/20=(7*3)/20*3=21/60
11/30=(11*2)/30*2=22/60