Answer:
7. x = 23
Step-by-step explanation:
They are angles on transversals intersecting parallel lines. Also vertical angels are equal to each other.
So for example question 7 you need to use these two things to realize that 4x is the same angle as (3x + 23) so you have to put them in an equation like this
4x = 3x + 23 and then solve it algebraically
