11. Solve algebraically (showing all steps). X= 2 a. The sum of 2 numbers equals 233. Five times the first number is equal to one more than the second number. b. At a restaurant, the buffet lunch has a different price for adults and children. On Thursday, the restaurant sold 4 adult buffet lunches and 7 children buffet lunches for a total of $86. On Friday, they sold 11 adult buffet lunches and 7 children buffet lunches for a total of $163. What are the prices of the adult buffet and the child buffet lunches