- \(1\over 11\)
- \(7\over 11\)
- \(1\over 2\)
- \(3\over 2\)

Option 3 : \(1\over 2\)

**Calculation:**

\(x + {1\over 11} - {4\over 11} + {7\over 11}- {5\over 11} = {9x\over 11}\)

⇒ \({11x + 1 - 4+ 7- 5\over 11} = {9x\over 11}\)

⇒ 11x + 8 - 9 = 9x

⇒ 11x - 9x = 1

⇒ 2x = 1

⇒ x = \(1\over 2\)

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