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andrey2020 [161]
3 years ago
10

Please help me!! <:,)))

Mathematics
1 answer:
Allisa [31]3 years ago
3 0

Answer:

7

Step-by-step explanation:

The sum of two interior angles in a triangle is equal to an

exterior angle that's complementary to the third interior angle

60 + 4 + 8x = 8 + 16x add like terms

8x + 64 = 16x + 8

64 - 8 = 16x - 8x

56 = 8x divide both sides by 8

7 = x

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