Walaupun soal itu susah, saya tetap menjawabnya dengan tenang.

Walaupun means although / even though. It introduces a clause that sets up a contrast:

• Walaupun soal itu susah = Although that question was difficult
• main clause: saya tetap menjawabnya dengan tenang = I still answered it calmly

Very close alternatives are:

• meskipun
• biarpun

All three can often be used similarly, though walaupun and meskipun are especially common in neutral written Indonesian.

In Indonesian, demonstratives like ini and itu usually come after the noun.

So:

• soal itu = that question / that problem
• buku ini = this book
• rumah itu = that house

This is different from English, where this/that usually comes before the noun.

Soal can mean several related things depending on context, such as:

• question
• problem
• exercise item
• matter / issue / topic

In this sentence, it most naturally means an exam/question-sheet question or problem.

So soal itu susah means something like:

• that question was difficult
• that problem was hard

Yes, but they are very close.

• susah = hard, difficult; very common in everyday speech
• sulit = difficult; often feels a bit more formal or standard

In many situations, they are interchangeable:

• Soal itu susah
• Soal itu sulit

Both are fine. A learner will hear susah very often in natural conversation.

Tetap means still, nevertheless, or all the same. It highlights that the action happened despite the difficulty.

Compare:

• Saya menjawabnya = I answered it
• Saya tetap menjawabnya = I still answered it / I answered it anyway

So tetap strengthens the contrast introduced by walaupun. It makes the sentence feel more like:

• Even though it was hard, I answered it anyway
• Although it was difficult, I still answered it

Menjawabnya can be broken down like this:

• jawab = answer
• menjawab = to answer
• -nya = it / him / her, depending on context

Here:

• menjawabnya = answer it

The -nya refers back to soal itu.

So the structure is:

• jawab → base/root
• meN- + jawab → menjawab
• menjawab + -nya → menjawabnya

That is a very common question. -nya has several uses in Indonesian. It can mean:

• his/her/their as a possessive
• him/her/it/them as an object
• sometimes a kind of definite marker, depending on context

In this sentence, -nya is an object pronoun, and it refers to soal itu.

So:

• menjawabnya = answer it

Because soal is not a person, English naturally uses it.

Yes, absolutely.

Both are correct:

• Saya tetap menjawab soal itu
• Saya tetap menjawabnya

The difference is mainly that menjawabnya sounds a bit smoother because soal itu was already mentioned earlier. Indonesian often avoids repeating the full noun when -nya can refer back to it clearly.

So using -nya here is very natural.

Dengan tenang means calmly or in a calm manner.

Indonesian often uses:

• dengan + adjective

to express an adverb-like meaning.

So:

• tenang = calm
• dengan tenang = calmly

This is very common:

• berbicara dengan pelan = speak softly / slowly
• menjawab dengan sopan = answer politely
• berjalan dengan cepat = walk quickly

In English, we often use an -ly adverb. Indonesian usually does not form adverbs that way, so dengan + adjective is a common solution.

Yes. Indonesian allows some flexibility.

For example, you could also say:

• Saya tetap menjawabnya dengan tenang walaupun soal itu susah.

This has the same basic meaning.

The version with walaupun at the beginning puts the contrast first:

• Walaupun soal itu susah, ...

That is often a very natural way to frame the sentence.

The comma separates the subordinate clause from the main clause:

• Walaupun soal itu susah, = subordinate clause
• saya tetap menjawabnya dengan tenang. = main clause

In writing, this comma is normal and helpful. It works much like English:

• Although the question was difficult, I still answered it calmly.

In casual writing, punctuation may be looser, but the comma is standard here.

In a standalone sentence like this, saya is the safest and clearest choice.

Indonesian sometimes omits subjects when they are obvious from context, especially in conversation. But if you say the sentence by itself, including saya makes it complete and natural:

• Saya tetap menjawabnya dengan tenang.

Without saya, it may sound more dependent on previous context.

It is basically neutral standard Indonesian.

A few notes:

• saya is polite/neutral for I
• walaupun is standard
• susah is common and slightly more everyday than sulit, but still completely normal
• dengan tenang sounds natural in both speech and writing

So the whole sentence works well in normal conversation, writing, or study materials.