Can someone explain this please

Answer:
Step-by-step explanation:
they are alternating angles, therefore congruent, we solve for x with an equation
2x + 39 = x + 64
x = 64 - 39
x = 25°
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check
2 x 25 + 39 = 25 + 64 (remember PEMDAS)
50 + 39 = 89
89 = 89