Из данного выражения выделяем К
К=72:8
К=9
Ответ 9
5/8*4/5=5/4*2*4/5=1/2*1/1=1/2
(9 -2 2/3*2 1/7)*21/46=
2 2/3*2 1/7=5 5/7
9-5 5/7=3 2/7
3 2/7*21/46=2 267/322
Что бы найти вычитаемое нужно из уменьшаемого вычесть разность, Чтобы найти уменьшаемое нужно разность прибавить к вычитаемому
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1. Математическое выражение, стоящее под
знаком обыкновенной дроби.
2. Как на Руси называли дроби?
3. Кто впервые в Европе ввёл десятичные
дроби?
4. Математическое выражение, стоящее над
знаком обыкновенной дроби.
5. Формат дроби.
6. В какой стране впервые
встречаются десятичные дроби?
7. Как называется эта дробь 9/8
?
8. Формат дроби.
9. Греческий математик, который
ввёл слова «числитель» и «знаменатель» в оборот?
10. Число, состоящее из одной или
несколько частей (долей) единицы?