3 years ago

What is x equal to in this problem?

Mathematics

1 answer:

marissa [1.9K]3 years ago

8 0

Answer: x = 6

Step-by-step explanation:

All angles in a triangle = 180*

9x - 11 + 80 + 57 = 180

9x + 137 = 180

9x = 54

x = 6

Plug in to see if its correct

9 (6) - 11 + 80 + 57 = 180

54 + 126 = 180

180 = 180

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