please answer it asap
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Answer:
as angle CBD= 30°
then angle BDA = 30° as the are vertical opposite angle
so in triangle BDA
angle B + angle D + angle A =180°
angle B. + 30° + 70°=180°
angle B + 100° =180°
angle B(x) = 80°
x = 80°
x and y are vertical opposite angle
so y = 80°