determine the sum first 35 terms of an Ap ì ít second tẻrm is 2 and seventh tẻrm is 22

determine the sum first 35 terms of an Ap ì ít second tẻrm is 2 an

1.	determine the sum first 35 terms of an Ap ì ít second tẻrm is 2 and seventh tẻrm is 22
Answer» a =-2 and d is 4 2310 As a=-3 &d=5S35=2870