For Two: I had to multiply 4 to both sides which would cross the 4 on the left side out and the right side would become 20. Then, I just subtracted 18 to leave x alone and got x=2.
For Four: I had to subtract one from both sides to make 33x on the left and 11x on the right. 33x=11. Then, I had to do: 11/33 to leave the x alone and I ended up with 1/3.
