Answer:
x=55
Step-by-step explanation:
Same side exterior angles are supplementary
x+9 and 2x+6 are same side exterior angles so they sum to 180
x+9 + 2x+6 = 180
Combine like terms
3x+15 = 180
Subtract 15 from each side
3x+15-15 = 180-15
3x= 165
Divide each side by 3
3x/3 = 165/3
x = 55
