Question

i can't pay you (change to affirmative)​

Answer 1

I'm unable to pay you.

Answer 2

Affirmative sentences are sentences which states something directly without being negative. In other words, it can be said that it's a type of positive declaration.

The given statement has a negative tone because of the presence of 'can't' and this needs to be changed( in a positive way)keeping the meaning of the sentence constant.

The correct answer is:

I am incapable of paying you.

It can also be written as I am unable to pay you.

(Usage of any negative words such as don't, can't, not should be avoided).