Answer:
I think the equation is 7l +5=60
Step-by-step explanation:
Well, the amount of degrees is 1,980, so plug that in so that the equation is 1980 = (n-2)180. Then, do order of operations. Divide 1980/180, which is 11. Then, just add 2. So, the polygon has 13 sides.
Answer:
it seems like i got it wrong, sorry for answering !