P.A.: (11, a2, a3, a4, a5, 26)
an = a1 + (n - 1) * r
26 = 11 + 5r
5r = 15
r = 3
P.A.: (11, 14, 17, 20, 23, 26)
Pronto!
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P.A.: (11, a2, a3, a4, a5, 26)
an = a1 + (n - 1) * r
26 = 11 + 5r
5r = 15
r = 3
P.A.: (11, 14, 17, 20, 23, 26)
Pronto!