an=n(n+7)

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Solution for an=n(n+7) equation: 


Simplifying
an = n(n + 7)

Reorder the terms:
an = n(7 + n)
an = (7 * n + n * n)
an = (7n + n2)

Solving
an = 7n + n2

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Divide each side by 'n'.
a = 7 + n

Simplifying
a = 7 + n

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