Question

2x+7y=11
5x+35/2y=25​

Answer 1

Answer:

answer is 15 / 485

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

2x+7y=11..........(1)

$5x + \frac{32}{2y} = 11..........(2) \\ \\ x = \frac{11 - 7y}{2} ........(3) \\ \\ putting \: value \: of \: x \: into \: equation \: (2) \\ \\ 5( \frac{11 - 7y}{2} ) + \frac{32}{2y} = 11 \\ \\ \frac{55 - 7y}{2} + \frac{32}{2y } = 11 \\ \\ \frac{ { - 7y}^{2} + 55y + 32 }{2} = 11 \\ \\ { - 7y}^{2} + 55y + 32 = 11 \times 2 = 22 \\ \\ { - 7y}^{2} + 55y = 22 - 32 = - 10 \\ \\ { - 7y}^{2} + 55y = - 10$

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