Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
Two road crews are paving a straight section of highway. The first crew has completed paving
97 kilometers and is completing 2 additional kilometers per day. The second crew has only
finished 70 kilometers but is covering 5 kilometers per day. If the two crews started at
opposite ends of the road and are working toward the middle, they will eventually meet. How
much road will each crew have completed? How long will that take?