Предмет: Математика, автор: Лекса25

Антон задумал число, прибавил его к числителю и знаменателю дроби 12/43, затем сократил полученную дробь и получил в результате дробь 2/3. Какое число задумал Антон? Решите пожалуйсто! СРОЧНО!!!!

Ответы

Автор ответа: FluffyKitten13

х - это задуманное число

(12+х)/(43+х)=2/3
(43+х)2=3(12+х)
86+2х=36+3х
х=86-36=50

Проверка:
(12+50)/(43+50)=62/93=2/3

Автор ответа: полька73

антон задумал число26/43

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careful
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best
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