Question

In an AP, if d = -4, n= 7, an = 4, then a is___________.

Answer 1

Answer❤

$a_n = a+(n-1) d$

$4 = a + (7-1) (-4)$

$4=a+ 6(-4)$

$4= a - 24$

$4+24 = a$

$a=28$

Answer 2

Answer:

a = 28

Step-by-step explanation:

Given -

d= (-4)

n = 7

an = 4

We know, an = a + (n - 1)d

But a is not given to us.

Substituting the values of d, n and an -

4 = a + (7 -1) * (-4)

a = 4 - 6 * (-4)

a = 4 + 24

a = 28

Hope it helps you!