Answer x is 7
Explanation:
The three angles are 104degrees, (9x-25) and unknown
The pictures shows that the two sides are equal therefore the two opposite angles are equal
104 + (9x-25) +(9x-25) =180
RE write
104 +2(9x-25) =180
Subract 104 from both sides
2(9x-25) = 180-104
2(9x-25) = 76
Divide both sides by 2
9x - 25 = 38
Add 25 to both sides
9x = 63
Divide both sides by 9
X =7
The angle is 9x-25 = 38