Assuming these triangles are similar,solve for x

Answer:
x = 11 1/2
Step-by-step explanation:
the side labeled as 63 is similar to the side labeled as '6x-6' so we can set them equal to each other to solve for 'x':
6x-6 = 63
add 6 to each side to get:
6x = 69
x = 69/6
x = 11 3/6 or 11 1/2