Step-by-step explanation:
if the triangles are congruent than angle ADB=CBD
hence x=50
side DA = CB
y-10=3y-20
-2y=-10
y=5
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Verified answer
Step-by-step explanation:
if the triangles are congruent than angle ADB=CBD
hence x=50
side DA = CB
y-10=3y-20
-2y=-10
y=5