Question

find 15th term of ap x-7,x-2,x-3....

Answer 1

Hey

Here is your answer,

first term , a = x-7
d , common difference= x-2-(x-7)
= x-2-x+7
=5

By using the formula An= a+(n-1)d
A15 = (x-7) +(15-1)5
A15 = x-7 +70
A15 = x+63

Hope it helps you!

Answer 2

Hey !

⭐ Here is your answer ⭐

_______________________

First term ( a ) = x - 7

Common difference ( d ) = a2 - a1

=> x - 2 - ( x - 7 )

=> x - 2 - x + 7

=> 5

Hence d = 5

So
a15 = ?

a15 = a + 14d

So a15 ==>
==> x - 7 + 14 × 5

==> x - 7 + 70

==> x + 63

Hence the 15th term is x + 63✔

Hope it helps ☺