Ateacher writes two equations as shown. j = 3/8 (1/3 - 2/5) k = 3/4 (2/3 - 5/6) part a solve both equations. express your answer as a fraction in simplest form. show your work. part b what is the sum of j and k ? express your answer as a fraction in simplest form. show your work. part c what fraction when added to the result of part b would equal zero? explain your answer. part d create a real-world situation to represent the description in part c.