Question

Please help, It’s urgent, you’ll get 12 points for answering, but please show how you got your answer

Answer 1

x = 25

Explanation:

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

3x - 10 is an exterior angle of the triangle , then

3x - 10 = 25 + x + 15

3x - 10 = x + 40 ( subtract x from both sides )

2x - 10 = 40 ( add 10 to both sides )

2x = 50 ( divide both sides by 2 )

x = 25