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09-11-2021
Mathematics

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09-11-2021

Answer:

x = 19

Step-by-step explanation:

These angles are supplementary angles which mean they add up to 180:

8x - 7 + x + 16 = 180

9x + 9 = 180

9x = 180 - 9

9x = 171

x = 171/9

x = 19

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