Предмет: Математика, автор: Jose02210012

Масса арбуза,дыни и тыква вместе 19 кг. Арбуз тяжелее дыни на 4 кг.Отношение массы дыни к массе тыквы равно 2:1.Найдите массу арбуза:тыквы

Ответы

Автор ответа: Afinka4

дыня-х
тыква-2х
арбуз-2х+4
всего -19
--------------------
х+2х+2х+4=19
5х=15
х=3
--------------------
дыня-х=3
тыква-2х=6
арбуз-2х+4=10

Автор ответа: Алина55559

Откуда вы взяли 6 и 10?

Автор ответа: Алина55559

объясните пожалуйста, а то я совсем не поняла

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