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Alina0208
@Alina0208
August 2021
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помогите решить пожалуйста)
1В.31 по буквой б и 1В.33 под буквой а!!
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prettypushkova
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1В.33.а) (10 * (471/5 : 1,2 - 20 : 6 3/7) - 1 35/36) : 6 - 1 13/15 * (31/42 + 47/56 + 25/48) = 172 23/25
Числитель:
1) 47 1/5 : 1 1/5 = 236/5 : 6/5 = 236/5 * 5/6 = 236/6 = 39 2/6 = 39 1/3
2) 20 : 6 3/7 = 20 : 45/7 = 20/1 * 7/45 = 140/45 = 3 5/45 = 3 1/9
3) 39 1/3 - 3 1/9 = 39 3/9 - 3 1/9 = 36 2/9
4) 36 2/9 * 10 = 3260/9 = 362 2/9
5) 362 2/9 - 1 35/36 = 362 8/36 - 1 35/36 = 361 44/36 - 1 35/36 = 360 9/36 = 360 1/4 - результат числителя;
Знаменатель:
1) 31/42 + 47/56 + 25/48 = 248/336 + 282/336 + 175/336 = 705/336 = 2 33/336 = 2 11/112
2) 1 13/15 * 2 11/112 = 28/15 * 235/112 = 235/60 = 3 55/60 = 3 11/12
3) 6 - 3 11/12 = 5 12/12 - 3 11/12 = 2 1/12 - результат знаменателя;
360 1/4 : 2 1/12 = 1441/4 : 25/12 = 1441/4 * 12/25 = 4323/25 = 172 23/25
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1В.33.а) (10 * (471/5 : 1,2 - 20 : 6 3/7) - 1 35/36) : 6 - 1 13/15 * (31/42 + 47/56 + 25/48) = 172 23/25Числитель:
1) 47 1/5 : 1 1/5 = 236/5 : 6/5 = 236/5 * 5/6 = 236/6 = 39 2/6 = 39 1/3
2) 20 : 6 3/7 = 20 : 45/7 = 20/1 * 7/45 = 140/45 = 3 5/45 = 3 1/9
3) 39 1/3 - 3 1/9 = 39 3/9 - 3 1/9 = 36 2/9
4) 36 2/9 * 10 = 3260/9 = 362 2/9
5) 362 2/9 - 1 35/36 = 362 8/36 - 1 35/36 = 361 44/36 - 1 35/36 = 360 9/36 = 360 1/4 - результат числителя;
Знаменатель:
1) 31/42 + 47/56 + 25/48 = 248/336 + 282/336 + 175/336 = 705/336 = 2 33/336 = 2 11/112
2) 1 13/15 * 2 11/112 = 28/15 * 235/112 = 235/60 = 3 55/60 = 3 11/12
3) 6 - 3 11/12 = 5 12/12 - 3 11/12 = 2 1/12 - результат знаменателя;
360 1/4 : 2 1/12 = 1441/4 : 25/12 = 1441/4 * 12/25 = 4323/25 = 172 23/25