Question

The angles of a triangle are (x + 21)', x° and (2x - 45)°. Find the value of x.​

Answer 1

Answer:

x = 51°

Step-by-step explanation:

(x+21) + x + (2x-45) = 180(Sum of interior angles of a triangle is 180)

⇒4x +21 - 45 = 180

⇒4x-24 = 180

⇒4x = 204

⇒x = 204/4 = 51°

Answer 2

Answer:

value of x =51

Step-by-step explanation:

by angle sum property all the angles of a triangle are supposed to be 180

therefore

x+21+x+2x-45=180

4x-24=180

4x=180+24

4x=204

x=204/4

x=51