Как найти кратчайшее расстояние от о.Пасхи до экватора при помощи линии градусной сети?

1) if they (not to go) to Moscow, they (not to hear) the famous musicians

2) my father (to have ) more free time if he (not to read) so many newspapers

3) if you (not to be) busy, you (to come) to our party

4) i (to translate) the text if you (to give) me your dictionary for a couple of days