Answers

  • Brainly User
2016-07-03T18:53:07+08:00
First, find the common difference:
d = 105-98
d = 7

Find a₁ using a₁₄=98 as reference

an = a₁ + (n-1)(d)

a₁₄ = a₁ + (14-1) (7)

98 = a₁ + (13)(7)

98 = a₁ + 91

a₁ = 98-91

a₁ = 7

ANSWER:  The first term is 7.
0