Question

In an AP, if the common difference (d) = -4.
and the seventh term ay is 4, then find the
first term.
​

Answer 1

Answer:

First term=28

Step-by-step explanation:

d=-4, t7=4 ,a=?,n=7

tn=a+(n-1)d

t7=a+(7-1)(-4)

4=a+6(-4)

4=a-24

4+24=a

28=a

:.t1=a=28

:.first term is 28