Question

In an AP, if the common difference (d) is -5
and the 9th term (a,) is -43, then find the
first term.​

Answer 1

Answer:

Let a be the first term

Common difference = d = - 5

9th term = a + 8d = a - 40

By the given condition

a - 40 = - 43

a = - 3

So the first term = - 3

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Answer 2

Answer:

In an AP, if the common difference (d) is -5

and the 9th term (a,) is -43, then find the

first term.​

by using given data  d=-5 A9=-43

Hence A9=-43

a+8d=-43

a+8*-5=-43

a-40=-43

a=-43+40

a=-3

Answer: First term is -3

Step-by-step explanation: