Question

If x+1 and -x+17 are the second and the sixth terms of a sequence with a common difference of 5, find the value of x

Answer 1

x= -2

Explanation:

a6=a2+4d

-x+17=x+1+4(5)

-x+17=x+1+20

-x-x=1+20-17

-2x=4

x= -2