Answer:
Step-by-step explanation:
It looks, by the markings, that ABC is equilateral.
That means that all three sides should be equal.
4x - 30 = 3x - 5 Subtract 3x from both sides
4x-3x - 30 = - 5 Combine
x - 30 = -5 Add 30 to both sides
x = - 5 + 30
x = 25
==============
To confirm, you need to involve BC
3x - 5 = 2x + 20 Subtract 2x from both sides
3x - 2x - 5 = 20 Add 5 to both sides
x = 20 + 5
x = 25
Conclusion: x = 25
