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maria [59]
3 years ago
14

Solve for x in geometry

Mathematics
1 answer:
vekshin13 years ago
4 0

Answer:

x = 3

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

28x - 2 is an exterior angle of the triangle, thus

28x - 2 = 15x - 3 + 40 = 15x + 37 ( subtract 15x from both sides )

13x - 2 = 37 ( add 2 to both sides )

13x = 39 ( divide both sides by 13 )

x = 3

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