SOLUTION: Please help me solve: Write the rule for the arithmetic series {{{a5=12}}} {{{d=5}}}

Question 723418: Please help me solve: Write the rule for the arithmetic series
Answer by MathLover1(20855) (Show Source): You can put this solution on YOUR website!

a rule for creating nth term formula:
given:

if we have , means
....find first term

.....first term
so, the nth term formula is:

so, the arithmetic series:,,,,....