If you look at https://socratic.org/help/symbols you can find tips on formatting. Use the hash at both the start and end of any maths equations etc.
Use standard manipulation as if the < behaved the same way (sort of ! ) as an =. You have to be careful about what you are doing if you have any multiplications involving negatives. You don't!
Collecting like terms
Divide by 3
Turn it round so that it has the variable on the left. Notice that you still have to make