Question

The angle of a triangle are (x-40)°,(x-20)°,(x-30)°

Answer 1

Answer:

sum of angles in a triangle = 180

x-40 + x-20 + x-30 = 180

3x - 90 = 180

3x = 90

x = 90/3

x = 30.

hope this helps you...

Answer 2

X - 40 + X - 20 + X - 30 = 180

3X - 90 = 180

3X = 270

X = 270/3

= 90

1st angle = 90 - 40 = 50

2nd angle = 90 - 20 = 70

3rd angle = 90 - 30 = 60