Предмет: Математика, автор: belova05es

за первый час самолёт пролетел 6/13 маршрута,а за второй - остальные 630 км.найдите длину маршрута.

Ответы

Автор ответа: anastasyacwetkova

1-6/13=7/13 маршрута пролетел самолет во 2 час
630/7=90 км - составляют 1/13 всего маршрута
90*13=1170 км - длина всего маршрута

Автор ответа: nik2612

х - весь маршрут
6/13х+630=х
6/13х-х=-630
-7/13х=-630
х=-630:(-7/13)
х=630*13/7
х=1170(км)- длина всего маршрута

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