Answer: x=10, y=8.25
Explanation:
16.5x=20y ==> Congruent Angles are always equal.
16.5x+1.5x=180 ==> Angles on a straight line add up to 180 degrees(a straight angle)
18x=180
x=10
16.5(10)=20y
20y=165
y=165/20
y=8.25
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