После долгих переговоров мы смогли

После долгих переговоров мы смогли выработать решение

Результаты (английский) 1:

After long negotiations we were able to devise a solution

Результаты (английский) 2:

After long negotiations, we were able to work out a solution

Результаты (английский) 3:

after lengthy negotiations, we were able to make a decision