$17
17+11 = $28
28+11 = $39
39+11 = $50
17 + 11(n-1) $$
n-1 because removes the first class of $17
- the type of pair is vertical angle.
- to find x:
-- vertical angles are equal.
4x + 10 = 5x - 1
10 = x - 1
x = 11
Answer:

Step-by-step explanation:

Distribute negative ( - ) sign through the parentheses



Hope I helped!
Best regards! :D
Since both 3x and 6x have the variable x in it, we can just go ahead and add 3 and 6.
3x+6x=9x