यदि (7x – 3y) ∶ (4x + y) = 5 ∶ 4 है, तो x ∶ y का अनुपात ज्ञात कीजिये।

1
7 ∶ 2
2
9 ∶ 4
3
13 ∶ 6
4
17 ∶ 8

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