Question

for an given A.P t7=4,d=-4,then a=?​

Answer 1

Answer:

a= 28

Step-by-step explanation:

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

$tn = a + (n - 1)d$

t7 = a+(7-1)d

substitute the values given

4= a+(6×-4)

4= a- 24

a= 24+4

a= 28

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