Question

If the exterior angles of a triangle are (2x + 10)°, (3x - 5)° and (2x + 40)°, then x = ?​

Answer 1

Step-by-step explanation:

Sum of the exterior angles of triangle is 360°

Then,

2x+10°+3x-5°+2x+40°=360°

7x+45°=360°

7x=8°

x=8/7