Question

Ayuda!!!!!!!


Dados:

an=1458 r=3 n=6


Calcular a1

Answer 1

an=a1+(n-1)r
an-a1=(n-1)r
-a1=-an+(n-1)r
a1=an-(n-1)r

a1=1458-(6-1)3
a1=1458-(5)3
a1=1458-15
a1=1443