Question

in an ap an=4, d=2, sn=-14, find n and a

Answer 1

n = -2 and a = -2

The two variables indicates same number

You gave an = 4, means a x n = 4 and

sn = -14, means s x n = 14

a = -2 x n = -2 = (-2) x (-2) = 4

s = 7 x n = -2 = 7 x (-2) = -14