Question

if an ap the fourth term is 17 and seventh term is 23. find the common difference​

Answer 1

Answer:

a4=17

a+3d=17...............1

a7=23

a+6d=23..............2

on subtracting 2 from 1,we get

(a-a)+(6d-3d)=(23-17)

3d=6

d=6/3

d=2