Question

Solve for x in the figure below
3x-1
21
167°​

Answer 1

Answer is 49

Explanation:

167=(3x-1)+21(Exterior angle is equal to two opposite interior angle)

or,167=3x-1+21

or,167=3x+20

or,167-20=3x

or,147=3x

or,x=147/3

or,x=49

Answer 2

49

Explanation:

167 = 21 + (3x - 1)

167 = 20 + 3x

3x = 147

x = 49