(2x - 1)/3 - (x + 2)/6 = (4x - 2)/6 - (x + 2)/6 = (4x - 2 - x - 2)/6 = (3x - 4)/6
Ответ: вариант 3)
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(2x - 1)/3 - (x + 2)/6 = (4x - 2)/6 - (x + 2)/6 = (4x - 2 - x - 2)/6 = (3x - 4)/6
Ответ: вариант 3)