Answer:
19
Explanation:
The two values are equal to each other because they are vertically symmetrical (i forgot the term, havent dine this in a while) so 3x-3 = [6(x - 10)] so to simplify this, you could say 6x - 60 = 3x-3, which makes it a lot more understandable. To find x, add 60 to both sides and tou should come out with 6x = 3x + 57, we now subtract 3x from both sides to get 3x = + 57, divide by three then you get the balue of x, which is 19