The 10th term of an arithmetic sequence 17 and the16th is 44,find the first three terms in the sequence

Answer 1

a+9d = 17
a+15d = 44

subtract them
6d = 27
d = 4.5

then a = 17-9(4.5) = -23.5

sequence starts as
-23.5 , -19 , -14.5 ...