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lubachupakhina
@lubachupakhina
April 2021
1
25
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Приведите дроби к наименьшему общему знаменателю:
A)5\7и1\2
Б) 7\20 и 1\15
В) 3\26 и 5\39
Г) 8\11 и 5\8
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email1331
А) 5 / 7 = 5*2 / (2*7) = 10 / 14
1 / 2 = 7*1 / (7*2) = 7 / 14
б) 7/20=7*20/(20*3)=21/20
1/15=(1*4)/(15*4)=4/60
в) 3 / 26 = 3 / (2*13) = 3*3 / (3*2*13) = 9 / 78
5 / 39 = 5 / (3*13) = 2*5 / (2*3*13) = 10 / 78
г) 8 / 11 = 8*8 / (11*8) = 64 / 88
5 / 8 = 5*11 / (8*11) = 55 / 88
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Answers & Comments
1 / 2 = 7*1 / (7*2) = 7 / 14
б) 7/20=7*20/(20*3)=21/20
1/15=(1*4)/(15*4)=4/60
в) 3 / 26 = 3 / (2*13) = 3*3 / (3*2*13) = 9 / 78
5 / 39 = 5 / (3*13) = 2*5 / (2*3*13) = 10 / 78
г) 8 / 11 = 8*8 / (11*8) = 64 / 88
5 / 8 = 5*11 / (8*11) = 55 / 88