Question

every man makes a mistake change into negative sentence

Answer 1

Hey Dear!
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You have given a sentence asking to change it into a negative form.
Generally, we would make the negative of the given sentence this way- 

Everman does not make a mistake.

But, here, we should change it into negative without changing its meaning. The whole process is called transformation of sentences. See the answer below:

Affirmative - Every man makes a mistake.

Negative - There is no one who does not make mistakes. 

OR

There is no one who does not make a mistake.

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Any problem in understanding the answer , please feel free to ask.

Answer 2

Answer:

man should do mistakes.