Remove Left recursion from context free grammer

Question

Answer 1

S -> Aa/Sa/c

A -> Ab/Sd/e

after substituting the value of S in terms of A

S -> Aa/Sa/c;

A -> Ab/ Aad/e/Aaa/ca;

after removing left recursion

S -> cS'/ AaS';

S' -> aS'/epsilon;

A -> eA'/caA'

A' -> bA'/adA'/aaA'/epsilon

Comments

How did you get Aaa and ca after substituting the value of S in terms of A in the second production?