Question 843550
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Hi,
X+3,2x+6,3x+9.....
arithmetic  d = x+3
{{{a[n]=a[1]+(n-1)*d}}}
{{{a[n]= (x+3)+(n-1)*(x+3)}}}
{{{a[10]= (x+3)+(9)*(x+3)= 10x + 30}}}