Предмет: Математика, автор: Нинафифа

Помогите пожалуйста решить .когда я решала на калькуляторе ответ 4.5 помогите пожалуйста.

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Автор ответа: tanped

9-4 1/2=8 2/2-4 1/2=4 1/2
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Автор ответа: Нинафифа

Спасибо приогромейшее

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