which term of the sequence 18, - 12 - 8,.............. is 512 / 729 ?
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a=18
d=-12-18=-30
an=a+(n-1)d
512/729=18+(n-1)-30
512/729-18=(n-1)-30
follow this steps
d=-12-18=-30
an=a+(n-1)d
512/729=18+(n-1)-30
512/729-18=(n-1)-30
follow this steps
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