Предмет: Математика, автор: rfhfgep1234567890

Турист наметил пройти маршрут длиной в 90 км.В первый день он прошёл х км.во второй день-в 2 раза больше чем в первый а в третий день на 5 меньше чем во второй.Какую часть пути прошёл турист за три дня?

Ответы

Автор ответа: Slava10092004

1) 90:2=45 2) 45 : 90=дробь сорок девяностых

rfhfgep1234567890: а в ответе написано х-1/на 18(икс минус один деленое на восемнадцать)

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