Solve the equation  .   (3 marks)

Consider the equation  .

Which of the following would be a correct step in solving this equation?

Find the value of    given  .  (1 mark)

If  ,  find  .  (1 mark)

Solve the equation  , leaving your answer as a fraction.  (3 marks)

Solve  , leaving your answer as a fraction.  (2 marks)