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How do u guys solve this problem

How do u guys solve this problem-example-1
User HanXu
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2 Answers

6 votes
Set 19x+3 equal to 21x-3 as they are of equal measures. They are corresponding angles
User Akash Babu
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3 votes
Those two angles are congruent(corresponding), so we can set these equal to each other.
19x+3=21x-3
-2x=-6
x=3
User NomisRev
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