plzzzzzz solve this

let the first term and common diff of the A.P.be a and d resply.

Acc to formula for the sum of n terms we get,

(11/2)[2a+10d]=429

and

(23/2)[2a+22d]=1863

so we get, the equations are

11a+55d=429

and

23a+243d=1863

solve these to find the values of a and d.

from that you can get the terms of the A.P.