Предмет: Математика, автор: pernadyr12

3 1/5 * 7/8 - 7/9 : (4 2/3)

Ответы

Автор ответа: ludmilaksenija2005

1

Пошаговое объяснение:

3 1/5•7/8 - 7/9: 4 2/3=

=16/5•7/8-7/9:14/3=

=14/5-7/9•3/14=14/5-1/6=84/30-5/30=

=79/30=2 19/30

pernadyr12: як ты сделал(а) с 79/30 на 2 19/30?

ludmilaksenija2005: 79/30=(2•30+19)/30=(2•30)/30 + 19/30= 2 +19/30= 2 19/30

pernadyr12: ❤️

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