Question

. The second angle of a triangle is 50⁰ less than 4 times the first angle. The third angle is 40⁰ less than the first. Find the measures of the three angles?

Answer 1

The first angle is 45 
The second is 130
The third is 5

Answer 2

Let the first be x.

second = 4x - 50

third = x - 40

x + 4x - 50 + x - 40 = 180

x + 4x + x = 180 + 50 + 40

6x = 270

x = 270/6

x = 45

Angles are    x,   = 45
                     4x - 50 = 4*45 - 50 = 130
                      x - 40 = 45 - 40 =     5

45°, 130°, 5°