Предмет: Математика, автор: annavaga

Реши задачу алгебраически.На изготовление 60 тетрадей двух видов пошло 840 листов бумаги, на каждую тетрадь одного вида требовалось 12 листов, а на тетрадь другого вида - 18 листов. Сколько изготовили тетрадей каждого вида?

Ответы

Автор ответа: momot

12х+18х=60,

30х=60,

х=2,

2х+х=60,
3х=60,
х=20 тетрадей,
20*2=40 тетрадей

20*18=360,

12*40=480,

480+360=840

20 по 18 листов и 40 по 12 листов

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