FIND THE VALUE OF X (problem in picture, geometry)

Question

asked Jul 2, 2021 16.6k views

1 Answer

Darina · Answer 1 · 2021-07-07T09:41:41+0000

Answer:

x = 12

Explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

8x - 1 + 3x + 4 + 3x + 9 = 180 , that is

14x + 12 = 180 ( subtract 12 from both sides )

14x = 168 ( divide both sides by 14 )

x = 12