Question

series aritmeticas an=5(7-n)​

Answer 1

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$\large\boxed{\bold{problema}}$

$an = 5(7 - n)$

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$n=\frac{35}{a+5}$

$\large\boxed{\red{solución}}$

$an=5(7-n)$

$an=35-5n$

$an+5n=35$

$\left(a+5\right)n=35$

$\frac{\left(a+5\right)n}{a+5}=\frac{35}{a+5}$

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