Variable avtaler kan sammenlignes så lenge prisområdet er det samme.

Because variable is the correct adjective form for a plural noun here.

The base adjective is variabel. It changes like this:

• en variabel avtale = a variable agreement
• et variabelt produkt = a variable product
• variable avtaler = variable agreements

Since avtaler is plural, the adjective takes the -e form: variable.

Avtaler is the plural of en avtale.

Common meanings of avtale include:

• agreement
• contract
• arrangement
• deal

In business or pricing contexts, it can often mean something like plans or contracts, depending on the wider text.

Kan means can.

Sammenlignes is the passive form of sammenligne, which means to compare.

So:

• kan sammenlignes = can be compared

This is a very common Norwegian way to make the passive. English often uses be + past participle, while Norwegian often uses the -s passive form.

This is a good question, because the -s form can be confusing.

On its own, sammenlignes can look like a present passive form:

• Avtalene sammenlignes = The agreements are being compared / are compared

But after a modal verb like kan, it functions as a passive infinitive:

• kan sammenlignes = can be compared

So in this sentence, you should understand it as be compared, not as a normal present tense verb.

Yes, that would be grammatical.

• kan sammenlignes
• kan bli sammenlignet

Both can mean can be compared.

But kan sammenlignes is shorter and very natural in formal or informational Norwegian. The -s passive often sounds neat and neutral, especially in general statements like this one.

Here så lenge means as long as or provided that.

It introduces a condition:

• så lenge prisområdet er det samme = as long as the price range is the same

This is not about time duration here. It does not mean for so long in this sentence. It means if this condition is met.

Prisområdet is the definite singular form of et prisområde.

Breakdown:

• pris = price
• område = area / range / zone

So prisområde means something like price range, price band, or price category, depending on context.

Because it is definite singular, Norwegian adds -et to the noun:

• et prisområde = a price range
• prisområdet = the price range

Because det samme here means the same one / the same thing.

In Norwegian, samme usually needs more structure around it. You normally say:

• det samme = the same
• den samme
• de samme

So:

• prisområdet er det samme = the price range is the same

Just er samme would sound incomplete in standard Norwegian.

Also, prisområde is a neuter noun, so det fits that gender.

This follows normal Norwegian main-clause word order.

The structure is:

• Variable avtaler = subject
• kan = finite verb
• sammenlignes = main verb in passive form

Norwegian main clauses usually follow the V2 rule, meaning the finite verb comes in the second position:

• Variable avtaler kan sammenlignes

If you changed it to Kan variable avtaler sammenlignes?, that would sound like a question:

• Can variable agreements be compared?

So the original order is the normal statement order.

After så lenge, you get a subordinate clause:

• så lenge prisområdet er det samme

The structure there is:

• så lenge = subordinating conjunction
• prisområdet = subject
• er = verb
• det samme = predicate

This clause means as long as the price range is the same.

A useful thing to remember: after conjunctions like så lenge, fordi, hvis, and at, Norwegian often uses subordinate clause patterns rather than main-clause inversion.

Grammatically, it is just an adjective meaning variable.

But in practical business or pricing language, variable avtaler may refer to a specific type of agreement, such as one with:

• variable prices
• variable rates
• changing terms tied to the market

So even though the grammar is simple adjective + noun, the real-world meaning can be more specific depending on context.