Question

in an ap if d = -4 and n= 7,an= 4 then find a
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Answer 1

Answer:

Step-by-step explanation:

an = a + [n-1]d

4=a+[4-1]-4

a+[3]-4

a=12

Answer 2

Answer:

24

Step-by-step explanation:

an=a+(n-1)d

4=a+(7-1)-4

4=a+5×-4

4=a+(-20)

4=a-20

4+20=a

24=a