an=2an-1

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Solution for an=2an-1 equation: 


Simplifying
an = 2an + -1

Reorder the terms:
an = -1 + 2an

Solving
an = -1 + 2an

Solving for variable 'a'.

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

Add '-2an' to each side of the equation.
an + -2an = -1 + 2an + -2an

Combine like terms: an + -2an = -1an
-1an = -1 + 2an + -2an

Combine like terms: 2an + -2an = 0
-1an = -1 + 0
-1an = -1

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

Simplifying
a = n-1

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