अगर यह जवाब गलत है, तो मैं नया जवाब लिख सकती हूँ।

It creates an if ... then ... structure.

• अगर = if
• तो = then

So:

• अगर यह जवाब गलत है = If this answer is wrong
• तो मैं नया जवाब लिख सकती हूँ = then I can write a new answer

In everyday Hindi, तो is sometimes omitted, but using it makes the structure clearer.

Hindi usually follows Subject–Object–Verb order, while English usually uses Subject–Verb–Object.

In this sentence:

• मैं = I
• नया जवाब = new answer
• लिख सकती हूँ = can write

So Hindi says something like:

• I new answer write can

That is normal in Hindi. The main verb usually comes toward the end.

Here यह means this.

• यह जवाब = this answer

Depending on context, यह can also work like it or this one, but in this sentence this answer is the most natural interpretation.

Also, in modern spoken Hindi, many people pronounce यह more like ये in conversation, but the formal written form here is यह.

जवाब means answer.

It is a masculine noun in Hindi. That matters because adjectives often agree with the noun’s gender.

So:

• नया जवाब = new answer

The adjective is नया because जवाब is masculine singular.

Because जवाब is masculine singular.

The adjective नया changes to match the noun:

• masculine singular: नया
• feminine singular: नई
• masculine plural: नए

So:

• नया जवाब = correct
• नई जवाब = incorrect

If the noun were feminine, you would use नई instead.

गलत means wrong or incorrect, and है means is.

So:

• जवाब गलत है = the answer is wrong

A useful point: गलत does not change form for gender here. It stays गलत whether the noun is masculine or feminine.

लिख सकती हूँ means can write or am able to write.

It is made of:

• लिख = write
• सकती = able/can (feminine form)
• हूँ = am

So literally it is something like I am able to write.

In natural English here, that becomes:

• I can write a new answer

Because the speaker is understood to be female.

In Hindi, this kind of verb form agrees with the subject’s gender:

• मैं ... लिख सकता हूँ = I can write said by a male
• मैं ... लिख सकती हूँ = I can write said by a female

So this sentence is spoken by a woman or girl.

A male speaker would say:

अगर यह जवाब गलत है, तो मैं नया जवाब लिख सकता हूँ।

The only change is:

• सकती हूँ → सकता हूँ

Everything else stays the same.

हूँ is the first-person singular form of to be, meaning am.

In लिख सकती हूँ, it helps complete the expression of ability:

• मैं लिख सकती हूँ = I can write / I am able to write

Hindi often uses forms of होना (to be) together with other elements to build meanings that English expresses differently.

Yes, sometimes Hindi can drop the subject if it is already clear from context.

So you might hear:

अगर यह जवाब गलत है, तो नया जवाब लिख सकती हूँ।

That still suggests I can write a new answer, especially because सकती हूँ already shows first person singular.

However, including मैं makes the sentence clearer, especially for learners.

Hindi can shorten it in casual use.

You may hear:

• अगर यह जवाब गलत है, मैं नया जवाब लिख सकती हूँ।
• or even, depending on context, just one part emphasized differently

But the full version with अगर ... तो ... is very standard and very clear, especially in careful speech or writing.

Yes. A common synonym is उत्तर, which also means answer.

So you could say:

अगर यह उत्तर गलत है, तो मैं नया उत्तर लिख सकती हूँ।

However:

• जवाब is very common in everyday Hindi
• उत्तर can sound a bit more formal, depending on context

A natural translation could be:

• If this answer is wrong, I can write a new one.
• If this answer is incorrect, then I can write a new answer.

In English, repeating answer twice is not always necessary, but Hindi often keeps the noun explicit:

• नया जवाब = new answer

So the Hindi sentence is perfectly natural as written.