Answer:
76
Step-by-step explanation:
angle opp to 107 is equal to 107.
assuming the adjacent angles to 107 are equal, and let them be y
2*107+ 2*y = 360
y = 73
this 73 is present inside the triangle where 31° is also there. let z be opposite to x=
so 73+31+z = 180
z = 76
z=x=76 (opp angles)
