Question

Given ∆ABC≅∆PQR, mb=8v-9 , find m 31° b. 52° c. 49° d. 32°

Answer 1

Here, 5v+6 = 8v-9
8v - 5v = 6 + 9
3v = 15
v = 15/3
v = 5

So, m<b = 5(5) + 6 = 25 + 6 = 31
As they are congruent, m<q would be same [ 31 degree ]

In short, Your Answer would be Option A

Hope this helps!