Find the sum of nth term is given by a(n)=5-6n
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a (n)=5-6n
a (n)=5-6 (1)
a (n)=5-6
a (n)=-1
a (n)=5-6n
a (n)=5-6 (2)
a (n)=5-12
a (n)=-7
a2-a1=-7-(-1)=-7+1=-6
[d=-6]
a (n)=5-6 (1)
a (n)=5-6
a (n)=-1
a (n)=5-6n
a (n)=5-6 (2)
a (n)=5-12
a (n)=-7
a2-a1=-7-(-1)=-7+1=-6
[d=-6]
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