Interval arithmetics also gives False,
sage: from mpmath import iv
sage: # iv.prec = 24
sage: # iv.prec = 53 # for double precision
sage: x = 0.1
sage: iv.prec = x.prec() # precision of Sage Real numbers, 53
sage: iv.pretty = True
sage: iv.mpf('10.44')
[10.439999999999999503, 10.440000000000001279]
sage: iv.mpf('10.44')-iv.mpf('10.30')
[0.13999999999999879208, 0.14000000000000234479]
sage: iv.mpf('0.14')
[0.13999999999999998557, 0.14000000000000001332]
sage: iv.mpf('10.44')-iv.mpf('10.30') == iv.mpf('0.14')
False
sage: iv.mpf('10.44')==iv.mpf('10.44')
True
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