How do u find the supplement of the angle 64degree 47mins

Supplement of 64 degree 47min
Please explain

The supplement of an angle is 180° - (the measure of the angle).
One way to do this is to rewrite 180° as 179°60'. Now subtract the whole degrees (64) from 179, and the minutes (47) from 60, giving 115°13'.

Subtract it from 180 degrees or 179 degrees 60 minutes.
115 degrees 13 min