Our religion is a religion of ease, the Prophet (saws) said:”
“Facilitate things to people (concerning religious matters), and do not make it hard for them and give them good tidings and do not make them run away (from Islam)”. 
The hardship mentioned in the two verses is one, because it is defined with (the), it is singular in both, whereas, ease comes undefined, so there are two.
So, one hardship cannot overcome two reliefs; no matter how circumstances get hard and how life is dark, a day light will come to disperse the darkness.
Abdullah ibn Mass’ud (May Allah be pleased with him) said: “If the hardship entered a hole, the relief will follow it until it gets it out and overcomes it, so the poor will not wait but relief and the afflicted will not wait other than good health”
(with) refers to the fast coming of ease, as if it is associated with the hardship.
 Sahih Al-Bukahri, Book of knowledge, hadith No. 69