Question

Angle a = 40 degree , find angle b . 5b + 2a = 180 degree

Answer 1

Answer:

b = 100°

Step-by-step explanation:

5b+2a=180

5b+(2×40°)=180°

5b+80=180°

5b = 180°- 80°

b= 100°/5

b = 100°

Answer 2

Answer:

heya mate...

Given, a = 40 degree

To find, b

Solution,

5b + 2a = 180 degree

putting back the value of a, we get

=> 5b + 2 (40)degree = 180 degree

=> 5b + 80 degree = 180 degree

=> 5b = (180 - 80) degree

=> 5b = 100 degree

=> b = 100/5 degree

=> b = 20 degree.

hope it helps u mate.. ❤