图
>>> from sympy import Symbol as S, solve as so
>>> x = S("x")
>>> so([1 / x + 1 / (x + 1) + 1 / (x + 2) + 1 / (x + 3) - 19/20], [x])
[(3.00000000000000), (-2.70028170405396 - 0.e-23*I,), (-1.60274922278569 + 0.e-23*I,), (-0.486442757370879 - 0.e-21*I,)]
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