please solve this question
the answer is 45 degree
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Answer:
∠ABC= 45°
Step-by-step explanation:
∠ABC= ∠BCD (alt. ∠s, AB//CD)
(2x +15)°= (3x)°
2x +15= 3x
3x-2x= 15 (-2x on both sides)
x= 15
Substituting the value of x:
∠ABC
= ∠BCD
= [3(15)]°
= 45°