Question

If ABD = (2x – 7)°, DBC = (8x + 16)°, and
ABC = 159º, find ABD.

Answer 1

Explanation:

ABD+DBC+ABC =180° ( TRIANGLE)

(2x-7)°+(8x+16)°+159=180°

2x+8x-7°+16°+156=180

10x+165=180

10x=180-165

10x=15

x=15/10

x=1.5