If we assume that the figure is a triangle with a supplementary angle outside the triangle ABD, ∠F. Given that angle D is 31 and angle A is 27. Therefore, angle B is 122. Then, angle F is supplementary to angle D, meaning angle F will have a measurement of 180 - 31 = 149.
Answer:
-3a(9+3b)
Step-by-step explanation:
-9a3-3a3b
= -27a-9ab
= -3a(9+3b) answer
