Question 435298
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Hi
what is the first term in the sequence for which d=1/3 a7=10 2/3
{{{a[n]=a[1]+(n-1)*d}}}
{{{a[7]=a[1]+(6)*1/3 = 32/3}}}
 {{{a[1] = 32/3-6/3 = highlight(26/3)}}}

CHECKING our Answer***
   26/3 + 6*1/3 = 32/3