an=2-3n

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Solution for an=2-3n equation: 


Simplifying
an = 2 + -3n

Solving
an = 2 + -3n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = 2n-1 + -3

Simplifying
a = 2n-1 + -3

Reorder the terms:
a = -3 + 2n-1

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