an=4-1

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Solution for an=4-1 equation: 


Simplifying
an = 4 + -1

Combine like terms: 4 + -1 = 3
an = 3

Solving
an = 3

Solving for variable 'a'.

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

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

Simplifying
a = 3n-1

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