Answer:
x = 3
Explanation:
According to parallel lines, the angle above 40x degrees is 20x because of corresponding angles in a parallel line.
Corresponding angles in || lines are congruent to each other.
A straight line is 180 degrees
20x + 40x = 180
Combine like terms
60x = 180
Divide by 60 on both sides to isolate x
x = 3
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