Respuesta :

x1 - 3 = x2
subtract 3 from the first value to get the second one
[tex]T_n = a_1 + d(n - 1)[/tex]

[tex]a_1 = 7 , d = -3[/tex]

[tex]T_n =7 - 3(n - 1)[/tex]

[tex]T_n =7 - 3n + 3[/tex]

[tex]T_n =10 - 3n[/tex]