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kokol123
@kokol123
July 2022
1
3
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1 Найдите значение выражения.
2 4/7-1 3/7+3 1/7-2 5/7
2 Решите уравнение
9/13- x-1/13 =5/13
3 Решите уравнение, представив смешанные числа в виде неправильных дробей
6 2/7- 3 5/7 -x=1 1/7
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Answers & Comments
sovenok55555
2 4/7 - 1 3/7= 1 1/7
3 1/7-2 5/7=22/7-19/7=3/7
1 1/7+3/7=14/7
9/13-х-1/13=5/13
-х= 5/13-9/13+1/13
х=9/13-5/13-1/13
х=5/13
5/13=5/13
6 2/7-3 5/7-х=11/7
44/7-26/7-х=11/7
-х=11/17-44/7+26/7
х=44/7-11/7-26/7
х=7/7
х=1
3 votes
Thanks 2
kokol123
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Answers & Comments
3 1/7-2 5/7=22/7-19/7=3/7
1 1/7+3/7=14/7
9/13-х-1/13=5/13
-х= 5/13-9/13+1/13
х=9/13-5/13-1/13
х=5/13
5/13=5/13
6 2/7-3 5/7-х=11/7
44/7-26/7-х=11/7
-х=11/17-44/7+26/7
х=44/7-11/7-26/7
х=7/7
х=1