Answer:
∠B = 84
Step-by-step explanation:
Supplementary angles add up to 180°, You would subtract 96 from 180 to find angle B.
=> ∠B = 84
Given :
∠A + ∠B = 180°
∠A = 96°
=> 96° + ∠B = 180
=> ∠B = 180-96
Please see the image for solution
6b+3m
I hope this helped.