1, 1/6 (2x - 3) = -1/2 (x-1/4) - 2/3
2, 17/-8 : 3/4 + 2 . | 3/2x - 1 | = -1/2
3, | x^2 + 1/2 | - 15 1/2 = -12 3/4
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