Question 856028
Not enough info for just one solution
3x-4-(x+3)=2x-7 

3x-4+2x-7=5x-11 next term
5x-11-(3x-4)=3x-4-(x+3)
x+3-(2x-7) = -x-4 previous term

d = 2n+1,      x = n+4