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⇔
⇔
⇔3(2x - 3) = -1 (1/2)
⇔ 6x - 9 = -1/2
⇔ 6x = -1/2 + 9
⇔ 6x = 17/2
⇔ x = 17/2 : 6
⇔ x = 17/2 . 1/6
⇔ x = 17/16
2.
⇔
⇔ 2(3x - 4) = 1 + 3(x + 1)
⇔ 6x - 8 = 1 + 3x + 3
⇔ 6x - 8 = 3x + 4
⇔ 6x - 3x = 4 + 8
⇔ 3x = 12
⇔ x = 12/3
⇔ x = 4
3.
⇔
⇔
⇔
⇔
⇔
⇔
⇔ x = -4/13