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Anit [1.1K]
3 years ago
9

Can anyone help me out with this one?

Mathematics
1 answer:
Rina8888 [55]3 years ago
4 0
A(n)=a1 + (n-1)d
a1=12
d=5-12=-7
a(n) = 12+(n-1)(-7)
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