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IDONT understand please helpme

IDONT understand please helpme-example-1
IDONT understand please helpme-example-1
IDONT understand please helpme-example-2
IDONT understand please helpme-example-3

1 Answer

4 votes

Answer:

Angles 1 and 3 are congruent, so:

5x + 8 = 12x - 20

7x = 28

x = 4

User Nikamanish
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