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Hunter-Best [27]
2 years ago
11

Answer this question

Mathematics
1 answer:
Andrews [41]2 years ago
5 0

Answer:

x = 99 degrees.

Step-by-step explanation:

The angle in the triangle adjacent to 123 = 180 - 123 = 57 degrees.

m < x = 42 + 57 = 99 degrees.   ( by the external angle of triangle theorem).

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