Last term is 4, Comman difference is 2, Sum of all terms is - 14, find n and first term.

Last term is 4, Comman difference is 2, Sum of all terms is - 14, find

1.	Last term is 4, Comman difference is 2, Sum of all terms is - 14, find n and first term.
Answer» n=7 and first term =-8