1 - 4*x > 2*x + 2/3 - x - 1/2
1 - 4*x > -x + 2*x + 2/3 - 1/2
And(-oo < x, x < 1/6)
(-oo < x)∧(x < 1/6)
(-oo, 1/6)
x in Interval.open(-oo, 1/6)