Рок
Урок 115 • Дроби, Смешанные числа
114
не
6 Выполни вычисления.
18
19
-
7. 3
+
19 19
9
11
3
11
2.
11


ответ:
объяснения:
1)18/19-7/19+3/19=14
2)9/11-3/11-2/11=4
3)11/15-(3/15+7/15)=1
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