1. Solve the equation for x: -1/6(x-18)+1/3(x+3)=x+4
2. Subract the mixed numeral (write answer as mixed numeral): 32 7/9 - 18 13/15
3. A ladder is leaning against building. The distance from the bottom of the ladder to the building is 16ft less than the length of the ladder. How high up the side of the building is the top of the ladder is that distance is 2ft less than the length of the ladder?