Respuesta:
8
Explicación paso a paso:
T12=30 r=2
Tn=T1+r(12-1)
T12=T1+2(12-1)
30=T1+22
30=t1+22
t1=8
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Respuesta:
8
Explicación paso a paso:
T12=30 r=2
Tn=T1+r(12-1)
T12=T1+2(12-1)
30=T1+22
30=t1+22
t1=8