صاحبتي عندها حل لمشكلة الحساب.

It can mean either one, depending on context.

In Egyptian Arabic, صاحب / صاحبة is a very common colloquial way to say friend. So صاحبتي can mean:

• my female friend
• my girlfriend

Context usually tells you which one is meant. If you want a more formal or less colloquial word for my female friend, Standard Arabic often uses صديقتي.

The -ي at the end is the possessive suffix meaning my.

The word behind it is صاحبة (female friend). When a word ending in ة takes a suffix, that ة is pronounced as t.

So:

• صاحبة = female friend
• صاحبتي = my female friend

That is why you hear a t sound in صاحبتي.

Because Arabic often expresses possession differently from English.

Instead of using a general verb like to have, Egyptian Arabic commonly uses عند plus a pronoun. Literally, عندها is something like at her or with her, but in natural English it often means she has.

So:

• عندها حل = she has a solution

This is one of the most important patterns for learners to get used to.

عندها has two parts:

• عند = at / with / in someone’s possession
• ها = her

So عندها literally means at her or with her, and in this sentence it means she has.

You can compare:

• عندي = I have
• عندك = you have
• عنده = he has
• عندها = she has

In present-tense Arabic, there is often no written word for is / are the way English has one.

Also, for possession, Egyptian Arabic usually does not use a single verb meaning to have. Instead it uses patterns like عنده / عندها / عندي.

So the sentence feels very natural in Arabic even though, word-for-word, it does not match English structure.

Because it is indefinite here.

• حل = a solution
• الحل = the solution

So عندها حل means she has a solution, not she has the solution.

This is just like the difference between indefinite and definite nouns in English, but Arabic usually shows it by adding or not adding الـ.

Here لـ means something like for or to, and with حل it gives the idea of a solution to a problem.

So:

• حل لمشكلة = a solution to a problem

In English we usually say solution to, while Arabic often uses لـ in this kind of structure.

Because this is a construct phrase, often called iḍāfa.

In an iḍāfa, the first noun usually does not take الـ. The second noun determines the definiteness of the whole phrase.

So:

• مشكلة الحساب = literally the problem of arithmetic/accounting or more naturally the math problem / the accounting problem, depending on context

That is why مشكلة appears without الـ here.

Since the phrase comes after لـ, you get:

• لمشكلة الحساب

not

• للمشكلة الحساب

الحساب can have several related meanings, depending on context, such as:

• arithmetic
• math
• calculation
• accounting
• account / bill in some contexts

So this is a word with a fairly broad range. The exact meaning depends on the situation. In this sentence, you should use the meaning already given in your learning context.

It sounds natural as Egyptian colloquial Arabic, especially because of words like صاحبتي and the use of عندها.

A more Standard Arabic version might be:

• صديقتي لديها حل لمشكلة الحساب

Differences:

• صديقتي is more formal than صاحبتي
• لديها is a more formal way to say she has
• عندها is very common in spoken Egyptian

So the original sentence is a good example of everyday Egyptian-style Arabic.

A simple learner-friendly pronunciation would be:

ṣaḥebti ʿandaha ḥall le-moshkilet el-ḥisāb

A more English-friendly rough version:

sa-HEB-ti and-a-ha hall le mosh-ki-let el he-SAAB

A few notes:

• ع in عندها is a consonant that English does not really have
• ح in حل and الحساب is a stronger, breathier h
• حل is pronounced ḥall, with a doubled l sound