Question

In a Ap the common difference is -4 and T7 is 4 then find the frist term

Answer 1

Answer:

$for \: \: a.p. - \\ \\ t_{7} = a + 6d \\ \\ = > 4 = a - 24 \\ \\ = > a = 28 \: (first \: \: term)$

Answer 2

Answer:

Step-by-step explanation:

Let first term be a.

T7=a+6d

=>4=a+6×(-4)

=>4=a-24

=>a=28

Hence, the first term =28