Question

plz answer it........................................................

Answer 1

Answer:

Step-by-step explanation:

3x-21=63

3x= 84

x=28

Answer 2

$\mathfrak{The\:Answer\:is}$

3x - 21° = 63° (vertically opposite angles)

=>3x = 84°

=>x = 28°

$\boxed{Hope\:This\:Helps}$