Предмет: Математика, автор: lubenecnatalya

Карандаш и ручка стоят вместе 17 зедов (зед — условная денежная едини-ца), а 5 таких же карандашей и 2 такие же ручки вместе стоят 55 зедов. Сколь-ко стоит один карандаш и сколько 1 ручка?

Ответы

Автор ответа: 15aaaa15
9

Ответ:

Пошаговое объяснение:

Карандаш+ручка=17

55-17-17=21

21:3=7 карандаш

10 ручка

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