Terms for subject Mathematics containing it is not difficult

English	Russian
it is difficult if not impossible to realize	трудно или даже невозможно осуществить
it is not difficult	нетрудно
it is not difficult	легко
it is not difficult to show, however, that our result can be applied to any two points, no matter what the algebraic signs of their coordinates are	каковы бы ни
it is not difficult to understand	нетрудно понять (how, what, that, etc.)
it is not too difficult to see that our theorem implies	нетрудно видеть, что (3)
it is not too difficult to see that our theorem implies	теорема влечёт за собой равенство (5; 5)