Предмет: Математика, автор: Катя0124835

Помогите пожалуйста!
Задание на фотографии

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Автор ответа: ирина20020505
0
вот решение на фотографии)
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Автор ответа: Анимешка0007
0
frac{xy}{x+y}
frac{0,6×0,4}{0,6+0,4}
0,6×0,4=0,24
0,6+0,4=1 frac{0,24}{1}
Деление если над:
0,24÷1=0,24
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Автор ответа: Катя0124835
0
Спасибо большое
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