an=7-2*n

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Solution for an=7-2*n equation: 


Simplifying
an = 7 + -2n

Solving
an = 7 + -2n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = 7n-1 + -2

Simplifying
a = 7n-1 + -2

Reorder the terms:
a = -2 + 7n-1

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