I uploaded a picture. Does it help??
There are four main types of transformations: translation, rotation, reflection and dilation. These transformations fall into two categories: rigid transformations that do not change the shape or size of the preimage and non-rigid transformations that change the size but not the shape of the preimage.
19 - (1 - 4x) - 9x + 30 = -5x+48
(Don't forget the negativity symbol before the answer, if it isn't visible. It's not fully visible on my screen.)
-7 + x = 6x - 12
-7 +12 = 6x - x
5 = 5x
x = 1
hope this helps