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Dados:
a1 → -73
n→ 7
r → ?
an → -49
An=a1+(n-1)·r
-49=-73+(7-1)·r
-49=-73+6r
-49+73=6r
6r=24
r=24/6
r=4
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________________________________________
Dados:
a1 → -73
n→ 7
r → ?
an → -49
________________________________________
An=a1+(n-1)·r
-49=-73+(7-1)·r
-49=-73+6r
-49+73=6r
6r=24
r=24/6
r=4
________________________________________
Att;Guilherme Lima