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Answer:
Step-by-step explanation:
If the figure is a parallelogram then the angles opposite one another are equal
2x - 30 = x + 40 Subtract x from both sides.
2x - x - 30 = x - x + 40 Combine
x - 30 = 40 Add 30 to both sides
x - 30 + 30 = 40 + 30 Combine
x = 70