[Note: The code you used doesn't work here. Use html or just ordinary writing with no code. Or use the special code of this site]Square both sides: Get 0 on the right and left side in descending order: Divide every term on both sides by 12 Factor the left side: Use the zero-factor property: Checking in original: False, so -2/3 is not a solution. Checking in original: True, so the only solution is x=1. So none of the answers you listed are correct because they all allow something other than 1 to be a solution. Edwin