Question

3x - 4y = 10 ; 4x + 3y =5​

Answer 1

Answer:

this is the answer

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Answer 2

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by elimination method

$3(3x - 4y = 10) \\ 4(4x + 3y = 5) \\ 9x - 12y = 30 \\ 16x + 12y = 20 \\ (- 12y \: and \: + 12y \: will \: get \: cancle) \\ 25x = 50 \\ x = \frac{50}{25} \\ x = 2 \\ put \: in \: eq \: 1 \\ 3x - 4y = 10 \\ 3(2) - 4y = 10 \\ 6 - 4y = 10 \\ -4y = 10 - 6 \\ -4y = 4 \\ -y = \frac{4}{4} \\ y = -1 \\ \\ x = 2 \: y = -1$