Đáp án: giải hệ phuong trình ( ((3x+2y=2) (-x+4y=3)) - Đáp án + Giải thích các bước giải Áp dụng phương pháp thế

nhihoang626

2 tháng trước

giải hệ phuong trình $\left \{ {{3x+2y=2} \atop {-x+4y=3}} \right.$

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Abaddon

2 tháng trước

Đáp án + Giải thích các bước giải:

Áp dụng : phương pháp thế

trandohuonggiang

2 tháng trước

Đáp án:

`{( 3x + 2y = 2 ),( -x + 4y = 3):} <=> {( 6x + 4y = 4 ),( -x + 4y = 3):} <=> { (7x = 1),( -x + 4y = 3):} <=> {(x = 1/7),(-1/7 + 4y = 3):} <=> {( x = 1/7),( 4y = 22/7):} <=> {( x = 1/7),( y = 11/14):} `

Vậy phương trình có `n^o ` ` ( x ; y ) ` `=` ` ( 1/7 ; 11/14 ) `

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giải hệ phuong trình $\left \{ {{3x+2y=2} \atop {-x+4y=3}} \right.$

2 câu trả lời

Viết một đoạn văn hoàn chỉnh về lý do học tiếng Anh bằng cách đưa ra các manh mối ( ko chép mạng nhá)

việt nam dành độc lập vào năm nào

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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giải hệ phuong trình $\left \{ {{3x+2y=2} \atop {-x+4y=3}} \right.$

2 câu trả lời

Viết một đoạn văn hoàn chỉnh về lý do học tiếng Anh bằng cách đưa ra các manh mối ( ko chép mạng nhá)

việt nam dành độc lập vào năm nào

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.