Change the sentence from affirmative to negative :-n
1. You are richer than me.
2. She tried all plans.
3. A few farmers saved their crop.

eg:-You are richer than I.
I am not richer than you.

Its meaning is 'you' is richer than 'I'. The sentence was changed into negative sentence:I am not richer than you. The meaning of the sentence is the same; 'You' is richer than 'I'.​