Answer : The value of 'x' is, 25
Step-by-step explanation :
The given triangle is an equilateral triangle in which all angle and sides are equal.
That means,
All angles are 60°.
All sides, AB = BC = AC
Given:
Side AB = 3x - 5
Side BC = 2x + 20
Side AC = 4x - 30
As, AB = BC = AC
So, 3x - 5 = 2x + 20 = 4x - 30
3x - 5 = 2x + 20
3x - 2x = 20 + 5
x = 25
Therefore, the value of 'x' is, 25