Answer:
x = 85° , y = 55°
Explanation:
x and 85° are vertically opposite angles and are congruent ( equal ), so
x = 85°
the sum of the 3 angles in Δ ABC = 180° , that is
x + y + 40° = 180° ( substitute x = 85° )
85° + y + 40° = 180° ( simplify left side )
y + 125° = 180° ( subtract 125° from both sides )
y = 55°