Answer:
y = 21
Explanation:
In the figure , 2y + 18 and y + 39 are opposite interior angles . We know that opposite interior angles are equal , so
2y + 18 = y + 39
=> 2y - y = 39 - 18
=> y = 21
Step-by-step explanation: 2y+18 = y+39
y=21
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