Question

In an AP id the common difference (d) =-4 and the seventh term (a7)is 4 then find the first term

Answer 1

Answer:

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Answer 2

Given d = - 4 and a7 = 4

We know that nth term of A.P. is

an = a + (n - 1)d

a7 = a + (7 - 1)d      [n = 7]

4 = a + 6(- 4)

a = 4 + 24 = 28