subtracting two dataframes

Question

df1:

City, 2015-12-31, 2016-01-31, ...
YYZ  562.14, -701.18, ...
DFW  562.14, -701.18, ...
YYC  562.14, -701.18, ...

df2:

Answer 1

Does this work?

df2.drop(['City']).subtract(df1.drop(['City']))