Question

in an ap the common difference d and seventh term a7 134 then find the first term

Answer 1

a7= 134
a + 6d= 134
a=134-6d
if the value of d is not given then answer is 134-6d only..
plz mark as brainliest if its well understood...cheers!

Answer 2

Answer:

$134-6d$

Step-by-step explanation:

Given : $a_7 = 134$

           Common difference d

To Find:The first term.

Solution :

Formula of nth term : $a_n=a+(n-1)d$

Where n is the term number.

a = first term.

d = common difference .

Now,$a_7=a+(7-1)d$

$134=a+6d$

$134-6d=a$

Hence the first term of A.P. is $134-6d$