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Vikentia [17]
3 years ago
9

I need help pleasee!!

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
5 0

Answer:

Step-by-step explanation:

1. the exterior angle in a triangle is equal to the sum of the 2 furthest angles in the triangle

9x+4=4x-7+86

this equation will give you what x is

after you find x, plug it into 9x+4 and set it = to 7y-1

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