Answer:
21
Step-by-step explanation:
3x+6=5x-4 because of alternate interior angles of a parallel line
10=2x
x=5
15+6=21
Sorry I cant answer it as i dont understand the question im so sorry :(
-7y-4x=17y-2x=53
-4x=24y-2x=53
-2x=24y=53
24y+2x=53
You would have to solve one at a time.
y=53/24
y=2.21
x=53/2
x=26.5
y=3x+6.
y=3x-5
I did it with a parallel line
