Question

18,x,y,-3. are in A. P find x+y​

Answer 1

Answer:

15

Step-by-step explanation:

If a,b,c,d are in A.P., then b-a=c-b=d-c

So according to the question,

x-18=y-x=-3-y

x-18=-3-y

x+y=-3+18

x+y=15