4 ≤ 4x - 12 < 26 | + 12
16 ≤ 4x < 38 |:4
4 ≤ x < 38/4
38/4 = 19/2 = 9.5
x ∈ [4, 9.5)
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4 ≤ 4x - 12 < 26 | + 12
16 ≤ 4x < 38 |:4
4 ≤ x < 38/4
38/4 = 19/2 = 9.5
x ∈ [4, 9.5)