Мы обсуждаем сделку.

Because сделку is the accusative singular form of сделка.

In this sentence, сделку is the direct object of the verb обсуждаем (we are discussing / we discuss), so Russian uses the accusative case.

• nominative: сделка = a deal
• accusative: сделку = a deal as the thing being discussed

This is a very common pattern with feminine nouns ending in -а:

• книга → книгу
• машина → машину
• сделка → сделку

Обсуждаем is the 1st person plural form of the verb обсуждать, meaning to discuss.

So:

• я обсуждаю = I discuss / I am discussing
• мы обсуждаем = we discuss / we are discussing

The ending -ем shows we for this verb pattern.

It can mean either one, depending on context.

Russian present tense often covers both:

• we discuss
• we are discussing

So Мы обсуждаем сделку could mean:

• We are discussing the deal right now
• We discuss the deal in a more general sense

Usually context tells you which meaning is intended.

Russian has no articles, so there is no direct equivalent of a / an / the.

That means сделка or сделку can mean:

• a deal
• the deal

The exact meaning depends on context.

So Мы обсуждаем сделку could be understood as:

• We are discussing a deal
• We are discussing the deal

Yes, often you can.

Russian verbs usually show the person clearly, so обсуждаем already tells you the subject is we. Because of that, you can say:

• Мы обсуждаем сделку.
• Обсуждаем сделку.

Both can mean We are discussing the deal.

Including мы can add emphasis, clarity, or contrast, for example:

• Мы обсуждаем сделку, а не контракт. = We’re discussing the deal, not the contract.

Yes, Russian word order is fairly flexible.

The neutral, straightforward order here is:

• Мы обсуждаем сделку.

But other orders are possible, for example:

• Сделку мы обсуждаем.
• Обсуждаем мы сделку.

These alternatives change the focus or emphasis, not the basic meaning.

For a learner, the standard subject + verb + object order is the safest default.

Обсуждать is imperfective.

Russian verbs come in aspect pairs, and the imperfective is commonly used for:

• ongoing actions
• repeated actions
• actions viewed as a process

Discussing something is often presented as a process, so обсуждаем is natural.

The perfective partner is often обсудить:

• Мы обсуждаем сделку. = We are discussing the deal.
• Мы обсудим сделку. = We will discuss the deal / We’ll discuss the deal through to completion.

So here the imperfective fits the idea of being in the middle of discussion or simply naming the activity.

Сделка often means deal, transaction, or agreement, especially in a business or legal context.

Depending on context, it could refer to:

• a business deal
• a negotiated agreement
• a transaction

It does not always match English deal in every situation, so context matters.

For example, in casual English, deal can sometimes be vague or conversational, but сделка often sounds more specifically connected to an actual arrangement or transaction.

A helpful learner-level pronunciation guide is:

my obsuzhDAYem SDELkoo

A few notes:

• Мы sounds roughly like my, but with a Russian ы sound, which is harder and less English-like.
• обсуждаем has stress on -да-: обсуждАем
• сделку has stress on the first syllable: сдЕлку

Stress matters in Russian, so it is useful to learn words together with their stressed syllables:

• мы
• обсуждАем
• сдЕлку

Сделка is inanimate, and yes, that matters in Russian grammar.

In the accusative singular, feminine nouns like сделка usually change -а to -у, regardless of animacy:

• сделка → сделку

Animacy becomes especially important with many masculine nouns, where the accusative may match either the nominative or genitive depending on whether the noun is animate.

So for this sentence, the main thing to remember is simply:

• сделка is the dictionary form
• сделку is the accusative form used after the verb

Yes, but the meaning may change slightly.

Some related verbs are:

• говорим о сделке = we are talking about the deal
• обсуждаем сделку = we are discussing the deal
• рассматриваем сделку = we are considering/examining the deal

The verb обсуждать suggests a more focused discussion of the matter, not just mentioning it.

Also notice the grammar difference:

• обсуждать что?
  • accusative
    обсуждаем сделку
• говорить о чём?
  • prepositional
    говорим о сделке

So you cannot just swap verbs without also checking the case pattern.

Because сделку is the singular accusative form.

The plural would be different:

• singular nominative: сделка
• singular accusative: сделку
• plural nominative/accusative: сделки

So:

• Мы обсуждаем сделку. = We are discussing a/the deal.
• Мы обсуждаем сделки. = We are discussing deals.

The dictionary forms are:

• мы = we
• обсуждать = to discuss
• сделка = deal / transaction / agreement

In the sentence, the verb and noun are changed to fit grammar:

• обсуждать → обсуждаем
• сделка → сделку

This is very typical in Russian: words change form depending on their role in the sentence.