Answer:
x=22
Step-by-step explanation:
To solve, use an important geometry theorem.
- The exterior angle of a triangle is equal to the sum of the two opposite interior angles.
Know this theorem, write 6x-7 = 103-x+2x and solve for x.
6x-7=103-x+2x
6x-7=103+x
5x-7=103
5x=110
x=22
