Question

2) The angles of a triangle are ( x-5)º , ( X+15)° and (2x - 30)". Find the value of x?​

Answer 1

Answer:

x = 50

Step-by-step explanation:

=> since sum of all angles in a triangle is 180,

thus (x-5) + (x +15) + (2x-30) = 180

=> 4x - 20 = 180

=> 4x = 200 => x = 50

Answer 2

sum of all angle of a triangle = 180°

(x-5) ° + ( x+15)° + ( 2x - 30)° = 180°

x - 5° + x + 15° + 2x - 30° = 180°

x +x +2x -5 +15 - 30 = 180°

4x - 20 = 180°

4x = 180 + 20

4x = 200

x = 200/4

x = 50°