Question

In an AP if the common difference is -4 and the seventh term is 4 then find the first term

Answer 1

D= -4
a + 6d= 4
a + 6× -4 =4
a - 24 = 4
a = 4 + 24
a = 28

Answer 2

HELLO DEAR,

given that:-

common difference (d) = (-4)

AND,

a7 = 4

=> a + (n-1)d = 4

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

=> a + -24 = 4

=> a = 24+4

=> a = 28


I HOPE ITS HELP YOU DEAR,
THANKS