Предмет: Математика, автор: skrypnikbogdan2009

за 7 зошитів і 4 альбоми для малювання заплатили 7гривень 95копійок скільки коштує 1 альбом якщо ван дорожчий за зошит на 75 копійок помогите пжж

Ответы

Автор ответа: nmasha12

Ответ пробуем рівнянням допустим зошит х а альбом х+75 коп

7x+4(х+75)=795

7х+4х+300=795

11х=495

х=45

зошит стоит 45 копійок, а альбом - 120 копійок или 1 грн 20 коп.

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