Hello,
I have problems with following sentences, not sure if i translated them correctly.
1) I don't know if i wrote it correctly.
не знаю, написал ли понятно или нет.
2) Polish language is similar to russian language.
Польский язык очень похож на русский.
3) In russian language variants are similar to those in polish language.
в русском языке склоняться похоже на польском языке
And sorry for my english