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Bnayagrawal · Answer 1 · 2017-02-01T02:00:13+0000

Hello darling okay so we have A(n-3)+8=bn
We are solving for n so...
an−3a+8+−8=bn+−8an−3a=bn−8
a(n−3)=bn−8
a(n-3)/n-3=bn-8/n-3
a=bn-8/n-3

:)

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