Eu sempre levo a identidade e o CPF quando preciso resolver alguma coisa no banco.

Yes. In Brazilian Portuguese, subject pronouns are often optional, because the verb form already shows the subject.

So:

• Eu sempre levo a identidade e o CPF...
• Sempre levo a identidade e o CPF...

both work.

Including eu can make the sentence slightly clearer, more emphatic, or more natural depending on context. In everyday Brazilian Portuguese, people often drop it unless they want contrast or emphasis.

Both are possible.

• Eu sempre levo...
• Eu levo sempre...

But sempre usually sounds more natural before the main verb in neutral speech.

So eu sempre levo is the most standard, common placement for always in a sentence like this.

Levo is the 1st person singular of levar in the present tense:

• eu levo = I take / I carry / I bring along

In this sentence, it means something like I always take / carry with me.

It suggests a habitual action: whenever the person goes to deal with something at the bank, they make sure to bring those documents.

Portuguese uses definite articles much more often than English.

So where English might say:

• I always take ID and my tax number

Portuguese naturally says:

• a identidade
• o CPF

This does not necessarily mean the in a very specific English sense. It is just normal Portuguese structure.

CPF stands for Cadastro de Pessoas Físicas.

It is a Brazilian taxpayer identification number, and in everyday life it is used constantly for identification in many situations, not just taxes.

A learner should understand that CPF is a very common Brazilian document/number, so in real life you will hear it all the time.

Acronyms in Portuguese often take gender based on the main noun in the full expression or by established usage.

In CPF, the full name is Cadastro de Pessoas Físicas. Since cadastro is masculine, people say o CPF.

This is something you often just learn together with the acronym:

• o CPF
• o RG
• a CNH

Usually letter by letter:

• cê-pê-éfe

In speech, someone might say:

• Meu CPF
• Você trouxe o CPF?

So it is not normally pronounced as a single word.

Both are correct:

• quando preciso
• quando eu preciso

Portuguese often omits the subject pronoun when it is understood from the verb form.

Since preciso clearly means I need, eu is not necessary.

Using eu would add a bit more emphasis or explicitness, but here it is perfectly natural to leave it out.

Here, preciso comes from the verb precisar:

• precisar = to need
• preciso = I need

So:

• quando preciso resolver... = when I need to sort out / deal with...

There is also an adjective preciso meaning precise / accurate, but that is a different use.

Literally, yes, but in natural English it often means:

• deal with something
• take care of something
• sort something out

So resolver alguma coisa no banco means something like handling a task or problem at the bank, such as:

• updating information
• fixing an account issue
• signing paperwork
• asking about a service

It is a very common, flexible expression in Portuguese.

Alguma coisa means something in a vague, nonspecific way.

It is used when the exact matter is unimportant, unknown, or obvious from context.

So the sentence means the speaker is talking generally about any bank-related issue, not one specific task.

Other possibilities could be:

• resolver algo no banco — a bit more concise, sometimes slightly more formal
• resolver alguma coisa no banco — very natural and common in everyday speech

Both can mean something, but they are used a little differently.

• alguma coisa is very common and conversational
• algo is shorter and can sound a little more formal, literary, or concise depending on context

So in everyday Brazilian Portuguese, alguma coisa often sounds more natural in speech.

No is a contraction:

• em + o = no

So:

• no banco = in/at the bank

Portuguese uses these contractions regularly:

• na = em + a
• nos = em + os
• nas = em + as

You normally would not say em o banco in standard Portuguese.

Because banco is masculine:

• o banco
• no banco = em + o banco

Again, Portuguese often uses the article where English might not say the. In this sentence, no banco simply means at the bank in a natural way.

On its own, banco can mean different things, including bank or bench, depending on context.

But in this sentence, because of identidade, CPF, and resolver alguma coisa, it clearly means a financial bank.

Context makes the meaning unambiguous.

Yes, the verbs are in the present tense:

• levo
• preciso
• resolver is an infinitive after preciso

In Portuguese, as in English, the present tense can describe habits and routines.

So Eu sempre levo... means the speaker does this regularly, not necessarily right now at this exact moment.

Yes, in Brazil that would be very common.

Possible versions:

• Eu sempre levo o RG e o CPF...
• Eu sempre levo a identidade e o CPF...

RG refers to the common Brazilian identity document.
Identidade is more general and easier for learners to understand.

In real Brazilian usage, people often say RG very naturally.

Very roughly:

• levar = to take
• trazer = to bring

The difference depends on direction and point of reference.

Here, the idea is that the speaker takes the documents along when going to the bank, so levar is the natural choice.

If you were speaking from the bank’s point of view or asking someone to bring documents to where you are, trazer might be used instead.

Yes. The original is already natural, but here are a few common variations:

• Sempre levo a identidade e o CPF quando preciso resolver alguma coisa no banco.
• Eu sempre levo meu documento e meu CPF quando preciso ir ao banco resolver alguma coisa.
• Quando preciso resolver alguma coisa no banco, sempre levo a identidade e o CPF.

All of these are natural. The original sentence is clear, correct, and very idiomatic.