Question

Can someone please help me?

Answer 1

x=3

Explanation:

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

45x = 25x+57+x

Combine like terms

45x = 26x+57

Subtract 26x from each side

45x-26x = 26x+57-26x

19x = 57

Divide by 19

19x/19 = 57/19

x = 3