Ответ учителя по предмету Математика
пусть х скорость автобуса
тогда х+55 — скорость поезда
3х+4(х+55)=465
3х+4х+220=465
7х=245
х=35- скорость автобуса
90 — скорость поезда
пусть х скорость автобуса
тогда х+55 — скорость поезда
3х+4(х+55)=465
3х+4х+220=465
7х=245
х=35- скорость автобуса
90 — скорость поезда
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