Предмет: Алгебра, автор: timer45677

Решите пожалуйста!!!
Систему уравнений внизу прикреплён скриншот
(u+m/15-u-m/3=1
(2u-m/6- 3u+2m/3=-25

Приложения:

Ответы

Автор ответа: MuhammadGulu
1

Ответ:

{u+m/15-u-m/3=1

{2u-m/6-3u+2m/3=-25

возведем в общий знаменатель

{u+m/15-5u-5m/15=1

{2u-m/6-6u+4m/6=-25

{-4u-5m/15=1

{-4u+3m/6=-25

{-4u-5m=15

{-4u+3m=-150 |•(-1)

{-4u-5m=15

{4u-3m=150

Прибавляем системы

-8m=165

m=-20,625

И вместо m поставим -20,625 находим u

-4u-5•(-20,625)=15

-4u+103,125=15

-4u=88,125

u=-22,03125

Ответы получилось неудобные )))

Похожие вопросы
Предмет: Английский язык, автор: neznaukaXD
one day a very hungry soldier came to an old woman s house .But the old woman was very mean .She said that she hasn't got any food."Oh"said the soldier That's A pity.I've got a magic stone I Can make soup with it . But I need some water . Well I've got a lot of of water said the mean old woman a magic stone eh ? She brought a big saucepan of water .The soldier put the stone into it . Then he tasted the soup . It's very good he said . It just needs a bit of salt and pepper . After some time he said It really needs a few vegetables . It a pity you haven't vegetables . The woman ran and brought some potatoes carrots beans and a big onion . The soldier put the vegetables into the saucepan.It s almost ready . It really needs a bit of meat . It s a pitu you haven t got any meat . The woman ran into the kitchen and came back with some ham and some sausages . The soldier put them into the saucepan . Right said the soldier . I can t see the stone anymore . So the soup is ready . Bread is very good with stone soup . It s a pity you haven t got any bread . I ve got a bit of bread said the woman . she ran into the kitchen and came back wich a loaf of bread some butter and a piece of cake . The old woman tasted the soup . M-m-m . This soup is delicious and you made it wich just tahat magic stone . Before leaving he said . Here is the magic stone . You can keep it . .But remember for the best stone soup you need a bit of meat a few vegetables and a bit of salt and pepper too найти слова автора