Question

In ap, d= and 7therm of the ap is 4 then find a

Answer 1

Given,
D=4
a7=4
a+6d=4
a+6(4)=4
a+24=4
a=4-24
a=-20

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Answer 2

Answer :-

Given :-

Difference (D) = 4

a + 6d = 4

To Find :-

First term (a) = ?

Solution :-

a + 6d = 4 .........[1]

Putting value of d in

equation 1

a + 6(4) = 4

a + 24 = 4

a = 4 - 24

a = -20

$\huge{\boxed{\boxed{a \:=\:-20}}}$