Question

in an AP the common difference and 7 term is 4 then find the first term

Answer 1

here is your answer....

Answer 2

a7 = 4
c.d = 4
a = ?
a7= a + 6d
4 = a + 6( 4)
4 = a + 24
4 - 24 = a
-20 = a
hope it will help u!!!