If 9 times the 9th term of an A.P is equal to13 times the 13 term .then find the 22nd term of the ap

If 9 times the 9th term of an A.P is equal to13 times the 13 term .the

1.	If 9 times the 9th term of an A.P is equal to13 times the 13 term .then find the 22nd term of the ap
Answer» Btw no information is missing here 9(a+8d)=13(a+12d) on solving this equation we get 4a+84d=0,in next step taking 4 as common we get a+21d=0 - (1) then the 22nd term=0 [from (1)] 9( a + 8d ) = 13 ( a + 12d ) Oke information is missing in question . You will have 2 equations and you can calculate then .