Find the difference between two sets, namely ${2, \frac{9}{\sqrt{2}}, 7, -6.74, 3} \setminus {2, \frac{15}{e}, 6, -2 \sqrt{3}, 8, -4 \sqrt{2}}$.

import math

fst = set((2, (9/(math.sqrt(2))), 7, -6.74, 3,))
snd = set((2, (15/math.e), 6, -2*math.sqrt(3), 8, -4*math.sqrt(2),))
print(fst - snd)
