Answer:
n= -2
Step-by-step explanation:
Hi there! :)
5n + 6 = -3n - 10
Solve for n:
Add 3n to both sides:
5n + 3n + 6 = -3n + 3n - 10
8n + 6 = -10
Subtract 6 from both sides:
8n + 6 - 6 = -10 - 6
8n = -16
Divide both sides by 8:
8n/8 = -16/8
n = -2.
the answer to the question will be c
8
2
71
in a triangle all the angles together equal 180°. So all you have to do is add 43 + 66=109 and then subtract that from 180