Х+у=8 решите по методу сложения

Hot or cold, what could it be?   summer   is here just look and see it's not winter or autumn here summer is something we shouldn't fear summer is out and it's time to play have fun because summer is not here to stay jump in the pool and play all day let's come on out and head for the bay summer time is once a year come on out without any fear plant some flowers for a summer day as long as summer is here to stay 

Ответ 4. x ∈ (1.3;+бесконечность)

Зделаем пропорцию-26%-130км
                                   100%-xкм
(100*130)/26=500км-весь шлях.
Залишилося подолати -500-130=370км

510 и 660 наверно так