Which expression can be substituted for y in the top equation of the following system to solve the system by substitution? What is the solution?
14x-2y=1
2x-y=-2

A) -7x+1/2,(1/14,-13/7)
B) 2x+2,(1/2,3)
C) -2x-2,(1/6,5/3)
D) 7x-1/2,(1/2,3)