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knowledgecomNo9
@knowledgecomNo9
August 2022
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Помагите плиз не понел на уроке
Выполни умножение и,сократите пулучившывся дроби.
1)1/6*3/10
2)5/7*8/11
3)4/7*21/16
4)15/19*38/5
5)37/45*90/74
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Magnitogorskru
Verified answer
Сокращаем крест накрест; 1)1/6*3/10=1/20; ///2)5/7*8/11=40/77; ///3)4/7*21/16=3/4; ///4)15/19*38/5=6; ///5)37/45*90/74=1;
4 votes
Thanks 3
dmitrij330
Verified answer
1/6 * 3/10 = (1*3) / (6*10) = 3/60=сокращаешь 3 в числителе и в знаменателе
= 1/20
5/7*8/11= (5*8) / (7*11) = 40/77
4/7*21/16 = (4*21) / (7*16) = 84/112=сокращаешь 3/4
15/19 * 38/5 = сокращаешь 3/1 * 2/1 = 6
37/45 * 90/74 = 1/1 * 2/2=1
4 votes
Thanks 4
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Answers & Comments
Verified answer
Сокращаем крест накрест; 1)1/6*3/10=1/20; ///2)5/7*8/11=40/77; ///3)4/7*21/16=3/4; ///4)15/19*38/5=6; ///5)37/45*90/74=1;Verified answer
1/6 * 3/10 = (1*3) / (6*10) = 3/60=сокращаешь 3 в числителе и в знаменателе= 1/20
5/7*8/11= (5*8) / (7*11) = 40/77
4/7*21/16 = (4*21) / (7*16) = 84/112=сокращаешь 3/4
15/19 * 38/5 = сокращаешь 3/1 * 2/1 = 6
37/45 * 90/74 = 1/1 * 2/2=1