Question

2x+7y+5=0
5x+y+6=0
Solution

Answer 1

Answer:

$2x + 7y + 5 = 0 \\ 2x + 7y = 5 \: \: ...(1) \\ 5x + y + 6 = 0 \\ 5x + y = 6 \: \: ...(2) \\ \\ multiply \: equation \:( 1) \: by \: 5 \: and \: (2) \: by \: 2 \\ 10x + 35y = 25 \: \: ...(3) \\ 10x + 2y = 12 \: \: ...(4) \\ subtract \: equation \: (4)by(3) we \: get \: \\ 33y =1 3\\ y = \frac{13}{33} \\ put \: y = \frac{13}{33} in \: eq \: (4) \\ 10x + 35 \times \frac{13}{33} = 25 \\ 10x + \frac{455}{33} = 25 \\ 10x = 25 - \frac{455}{33} \\ 10x = \frac{370}{33} \\ x = \frac{370}{33} \times \frac{1}{10} \\ x = \frac{371}{330}$

Step-by-step explanation:

therefore the answer is y=13/33 and x= 371/330

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