log(1/7) log(1/7, 4*x - 3) >= ---------- log(x + 3)
log(1/7, 4*x - 3) >= log(1/7)/log(x + 3)
Or(And(3/4 <= x, x < 1), 2 <= x)
(2 <= x)∨((3/4 <= x)∧(x < 1))
[3/4, 1) U [2, oo)
x in Union(Interval.Ropen(3/4, 1), Interval(2, oo))