4) (1/2 + 1/6 - 1 1/2) / (1/2 - 1/6 + 1 1/2)

Question

Numerator: 1/2 + 1/6 - 3/2 = 3/6 + 1/6 - 9/6 = -5/6. Denominator: 1/2 - 1/6 + 3/2 = 3/6 - 1/6 + 9/6 = 11/6. (-5/6) / (11/6) = -5/11.
Answer: -5/11

Accepted Answer

Numerator: 1/2 + 1/6 - 3/2 = 3/6 + 1/6 - 9/6 = -5/6. Denominator: 1/2 - 1/6 + 3/2 = 3/6 - 1/6 + 9/6 = 11/6. (-5/6) / (11/6) = -5/11.
Answer: -5/11

4) (1/2 + 1/6 - 1 1/2) / (1/2 - 1/6 + 1 1/2)

Ответ: