Answer: 
Step-by-step explanation:
Get rid of parentheses: 
Add all the numbers together, and all the variables: 
Move all terms containing x to the left, all other terms to the right:



Yes because both 18 and 33 are mulyiples of 3
18/33 = 6 / 11
I believe it is 6,561. sorry if i am wrong
The first one because the left bound is included [ and the right one is not )