Предмет: Математика, автор: pochts

Школьный пенал дороже альбома в 3 раза пенал карандаш и альбом стоят 400 рублей а сколько стоит пенал если цена карандаша 40 рублей выполнить схему и реши задачу

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Автор ответа: Аноним

х-цена альбома
3х - цена пенала
х+3х+40 (цена карандаша) = 400
4х = 400-40
4х=360
х=360/4
х=90
следует из условия, если х-цена альбома, 3*90 = 270 рублей цена пенала

Автор ответа: Аноним

успехов

Автор ответа: pochts

оп ль мл

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