Jag minns inte exakt vad hon sa, men jag tror att mötet börjar klockan nio.

In a normal Swedish main clause, the finite verb usually comes in the second position. This is the V2 rule.

So:

• Jag minns inte exakt ... = I do not remember exactly ...

Here:

• Jag = subject
• minns = finite verb
• inte = negation

That is why inte comes after minns in this sentence.

Compare:

• Jag kommer inte. = I am not coming.
• Hon vet inte. = She does not know.

If you put inte before the verb in a main clause, it usually sounds wrong.

Minns means remember. It comes from the verb minnas.

So:

• Jag minns inte = I don’t remember

Swedish also often uses komma ihåg for remember:

• Jag kommer inte ihåg exakt vad hon sa.

Both are natural, but there is a slight difference in style:

• minnas can sound a bit more formal or written
• komma ihåg is very common in everyday speech

In this sentence, minns is simply a neat, natural choice.

Because this is an embedded clause (a clause inside a larger sentence), not a direct question.

• vad sa hon? = what did she say?
  This is a direct question.

• jag minns inte exakt vad hon sa = I don’t remember exactly what she said
  This is an embedded clause.

In embedded clauses, Swedish usually uses normal subject-verb order:

• vad hon sa
• när han kom
• om de förstår

So:

• direct question: Vad sa hon?
• embedded clause: ... vad hon sa

Sa is the past tense of säga (to say), and it means said.

So:

• hon sa = she said

Swedish often uses the simple past where English also uses simple past:

• Jag vet vad han gjorde.
• Vi hörde vad hon sa.

You could also say:

• Jag minns inte exakt vad hon har sagt

But that changes the feel a little. Hon sa sounds like you are referring to what she said at that moment or in that conversation. It is the most straightforward choice here.

Att here means that.

So:

• jag tror att mötet börjar klockan nio = I think that the meeting starts at nine

In Swedish, att is often used where English may or may not use that.

English:

• I think (that) the meeting starts at nine.

Swedish:

• Jag tror att mötet börjar klockan nio.

In everyday speech, Swedish sometimes drops att after certain verbs, especially in informal contexts:

• Jag tror mötet börjar klockan nio.

But using att is very common and completely correct.

Mötet means the meeting. The ending -et is the definite article attached to the noun.

Swedish usually puts the at the end of the noun:

• ett möte = a meeting
• mötet = the meeting

So in the sentence:

• jag tror att mötet börjar ... you are talking about a specific meeting that both speaker and listener already know about.

Swedish very often uses the present tense for future events, especially when the event is scheduled, planned, or clear from context.

So:

• mötet börjar klockan nio literally = the meeting starts at nine
• natural meaning = the meeting starts at nine / the meeting will start at nine

This is very similar to English:

• The meeting starts at nine tomorrow.

Other examples:

• Tåget går klockan sex. = The train leaves at six.
• Vi ses imorgon. = We’ll see each other tomorrow.

So this is a very normal Swedish way to talk about the future.

In Swedish, time expressions often work without a preposition where English uses at.

• klockan nio = at nine o’clock

So:

• mötet börjar klockan nio = the meeting starts at nine

More examples:

• Vi ses klockan tre. = We’ll meet at three.
• Hon kommer klockan åtta. = She arrives at eight.

The word klockan literally relates to the clock, but in expressions like this it simply means at ... o’clock.

Exakt means exactly.

So:

• Jag minns inte exakt vad hon sa = I don’t remember exactly what she said

It modifies the whole idea of remembering:

• not just I don’t remember
• but I don’t remember precisely

You could compare:

• Jag minns inte vad hon sa. = I don’t remember what she said.
• Jag minns inte exakt vad hon sa. = I don’t remember exactly what she said.

Men means but.

It joins two main clauses:

1. Jag minns inte exakt vad hon sa
2. men jag tror att mötet börjar klockan nio

So the speaker is contrasting two ideas:

• they do not remember the exact words
• but they still think they know the meeting time

This is very similar to English:

• I don’t remember exactly what she said, but I think the meeting starts at nine.

Usually, Swedish prefers klockan nio when giving a clock time.

• mötet börjar klockan nio = natural
• mötet börjar nio = possible in very informal speech, but less standard and less clear

Using klockan is the safest and most natural choice for learners.

Yes, in most cases jag tror works very much like English I think.

Here it shows uncertainty:

• Jag tror att mötet börjar klockan nio. = I think the meeting starts at nine.

The speaker is not stating it as a confirmed fact. They are giving their best guess or belief.

If the speaker were more certain, they might say:

• Jag vet att mötet börjar klockan nio. = I know that the meeting starts at nine.

So jag tror is a natural way to soften the statement and show that the speaker is not completely sure.