If the 8th term of an AP is 31 and its 15th term is 16 more than the 11th term, find the AP

If the 8th term of an AP is 31 and its 15th term is 16 more than the 1

1.	If the 8th term of an AP is 31 and its 15th term is 16 more than the 11th term, find the AP
Answer» A+7d=31......and a+14d=a+10d+16....d==4 by 1 and 2