For this case we have that by definition, the sum of the internal angles of a triangle is 180 degrees. So, we have:

We add similar terms:

Answer:

Option D
try calculating the two numbers together
if not them i'm sorry
The answers are the first, third, and last. I took the test.
Hello!
Simplifying an expression is putting in its simplest form.
You do 20 * 5 = 100
Then 100 - 2 = 98
The simplest form of the expression is 98
The answer is 98
Hope this helps!