The 4th term of an A.P. is equal to 3 times the first term and the 7th term exceeds wice the 3rd term by 1. Find the 1st term and d.
The 4th term of an A.P. is equal to 3 times the first term and the 7th term exceeds wice the 3rd term by 1. Find the 1st term and d.