Предмет: Математика, автор: Sofya1005

Сложите дробь 3/7+4/9

Ответы

Автор ответа: aleksb1

Чтобы сложить обыкновенные дроби, необходимо в слагаемых обе дроби привести к общему знаменателю.
$\\ \frac{3}{7}+ \frac{4}{9}= \frac{3*9}{7*9} + \frac{4*7}{9*7}= \frac{27}{63} + \frac{28}{63}$

После этого сложить числители:

$\frac{27}{63} + \frac{28}{63}= \frac{27+28}{63} = \frac{55}{63}$

capitan007: Aleksb1 как удалять решения других?

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