Question

Please help Directions: Find the value of x.

(3x - 2)°
t
8.
(10x-11)°
(3x + 1)º

Answer 1

8. 10x - 11 + 3x -2 + 3x + 1 = 180 (angle Sum of triangle)

16x - 12 = 180

16x = 192

x = 12

10. 11x - 1 + 20x - 3 = 151 ( ext. angle of triangle)

31x - 4 = 151

31x = 155

x = 5