Help please I do not get it

3x+19 = 5x+33

3x= 5x+14

-2x=14

x= -7

y= 3(-7) + 19

y= -2

ANSWER:
(-7, -2)

Because both of the equations equal y, they also both equal eachother. Rearrange and solve for x, then plug it back in any of the equations to find the corresponding y value of the solution

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct