La meva mare i jo tenim la mateixa opinió.

In Catalan, possessives are usually used with a definite article, so la meva mare is the normal way to say my mother.

This is different from English, where you just say my mother without the.

Common patterns:

• el meu pare = my father
• la meva germana = my sister
• els meus amics = my friends

Because the sentence wants to explicitly say my mother and I. Catalan verbs do show the subject, so sometimes subject pronouns can be omitted, but here the speaker is naming both people clearly.

If you only said tenim la mateixa opinió, it would mean we have the same opinion, but it would not specify who we are.

Tenim is the 1st person plural form of tenir (to have), meaning we have.

That is because the subject is La meva mare i jo = my mother and I, which equals we.

A quick comparison:

• jo tinc = I have
• tu tens = you have
• ell/ella té = he/she has
• nosaltres tenim = we have

Because the full subject is not just la meva mare. It is la meva mare i jo.

When two nouns or pronouns are joined by i (and), the subject becomes plural:

• La meva mare i jo tenim... = My mother and I have...
• El meu amic i jo anem... = My friend and I go...

So the verb must be plural.

Catalan commonly uses tenir (to have) with opinió just like English uses have with opinion.

So:

• tenir una opinió = to have an opinion
• tenir la mateixa opinió = to have the same opinion

A very natural English equivalent here is also My mother and I agree.

La mateixa means the same, and it agrees with the noun opinió, which is feminine singular.

So:

• el mateix llibre = the same book (masculine singular)
• la mateixa opinió = the same opinion (feminine singular)
• els mateixos problemes = the same problems (masculine plural)
• les mateixes idees = the same ideas (feminine plural)

Because Catalan normally says the same + noun, just as English does.

So:

• la mateixa opinió = the same opinion
• el mateix cotxe = the same car

The article changes with the gender and number of the noun.

Because the sentence means that both people share one identical view on something: the same opinion.

If you wanted to talk about multiple opinions, you would use the plural:

• Tenim les mateixes opinions = We have the same opinions

But in many contexts, the singular sounds more natural when talking about agreement on a topic.

Yes, grammatically you can say Jo i la meva mare tenim la mateixa opinió.

However, La meva mare i jo often sounds more natural or more polite, because many speakers prefer to mention themselves second rather than first.

So both are correct, but La meva mare i jo is usually the better choice stylistically.

Not if you want to keep the meaning my mother and I.

You could leave out a subject pronoun when the verb already makes the subject clear, but here jo is part of a larger subject phrase:

• La meva mare i jo tenim... = My mother and I have...

If you removed jo, you would get:

• La meva mare té la mateixa opinió = My mother has the same opinion

That changes the meaning completely.

Yes. A very natural alternative is:

La meva mare i jo estem d'acord.

That means My mother and I agree.

Another possibility is: La meva mare i jo compartim la mateixa opinió. = My mother and I share the same opinion

Your original sentence is completely correct and natural; these are just useful alternatives.

In mateixa, the x is pronounced like the sh sound in English.

So mateixa sounds roughly like ma-TAY-sha.

This is a common Catalan spelling pattern:

• caixa sounds roughly like KAI-sha
• baix sounds roughly like bash / baish, depending on accent

So in this word, the x does not sound like the English ks.

The sentence follows a very normal Catalan order:

La meva mare i jo + tenim + la mateixa opinió
subject + verb + object

So:

• La meva mare i jo = subject
• tenim = verb
• la mateixa opinió = object

This is the most straightforward and neutral way to say it.