Negative-form

Hello,

1.My father is as wise as our Headmaster.

2. He is both a student and a player.

3.He loves all his sons equally.

I have to rewrite the above sentences in the negative form.

1A. Our Headmaster is not wiser than my father.

1B. My father is not less wise than our Headmaster

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2A. He is not only a student but also a player.

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3A. He does not love his sons unequally.

Are these transformation correct?

Thanks.