Question

what is the common difference of an AP in which a18 - a14=32

Answer 1

$a_{18} - a_{14} = 4d$ ~(Because $a_{18}$ is 4th term after $a_{14}$).
Given, 4d = 32
Therefore d = 8;

Answer 2

 a18-a14~(Because  is 4th term after ).
Given, 4d = 32
Therefore d = 8