2 years ago

Please help will mark brainlest!!

Mathematics

1 answer:

kipiarov [429]2 years ago

6 0

Answer:

Step-by-step explanation:

The angles will equal 180.

Thus, the equation is 9x-5+6x+20=180.

15x+15=180.

15x=165.

divide by 15 on both sides, x = 11.

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