Question

The excess of an angle over its supplement is 20 degrees. Find the angle.

Answer 1

100 degrees...

Answer 2

you arent using the right equation..

Answer 3

let n= the angle
180-n+ the supp
that what your supposed to use..

Answer 4

180-n= the supp *

Answer 5

This is how I'm reading it.
100 and 80 are supplementary to each other or as you put it 180 - 100 = 80
and 180 - 80 =100
100 has an excess of 20 degrees over 80 so that's why I said 100 degrees.