Respuesta :

dalendrk
[tex]a_1=2;\ a_2=5;\ a_3=8;\ ...;\ a_n=227\\\\the\ difference\ d=a_2-a_1\\\\d=5-2=3\\\\a_n=a_1+(n-1)d\\\\subtitute\\\\a_n=2+(n-1)\cdot3=2+3n-3=3n-1\\---------------------\\\\3n-1=227\ \ \ |add\ 1\ to\ both\ sides\\\\3n=228\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\boxed{n=76}[/tex]

Answer: 76-th term is equal 227.

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