Answer:
The other legs are 9 and 9√3
Step-by-step explanation:
The longer side of a 30-60-90 degree rectangle is 18.
The other legs will be

and

Where x is the longest side, which is given as 18.
Therefore one leg will be:

and the other leg will be:

11% not 100% sure Bc I calculated but hope it helped!
-3(-6b+5) -3 times -6b= 18b and -3 times 5= -15 so the answer is 18b-15