Question

9. The second angle of a triangle is double the first. The third angle is 40 less than the first. If we denote the first angle of this triangle by 'x', then the third angle will be​

Answer 1

Answer:

Answer will be 15

Step-by-step explanation:

x + 2x + x-40 = 180

= 4x-40 = 180

= 4x = 220

= x = 55

hence, 55-40 = 15 :)

edit : pls mark me brainliest :))