Предмет: Математика, автор: eraly460008

Решить задачу с помощью системы линейных уравнений:

Первое число в 1,3 больше второго.Разность первого и второго чисел равна 12.Найжите сумму этих чисел

Помогите плиз(дам 70 баллов)

eraly460008: Помогите плииииииз

Ответы

Автор ответа: plestakovavitap8gzgl

1

Ответ:

40,52

Пошаговое объяснение:

х - 1 число

у - 2 число

х=1.3у / х=1.3у / х=1.3у / х=1.3у / х=52

х-у=12 / 1.3у-у=12/ 12=0.3у/ у=40 / у=40

eraly460008: А как ты получил 52 и 40?

plestakovavitap8gzgl: из 12=0.3у, я сразу посчитала. из этого можно понять, что у=40, потом в одно из первоначальных уравнений подставила вместо у 40. в двух уравнениях х позже выйдет 52

plestakovavitap8gzgl: *х=52

plestakovavitap8gzgl: там же в обьяснении почти все пошагово

eraly460008: Понятно.Спасибо

plestakovavitap8gzgl: не за что)

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