an=-5+(n-4)4

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Solution for an=-5+(n-4)4 equation: 


Simplifying
an = -5 + (n + -4) * 4

Reorder the terms:
an = -5 + (-4 + n) * 4

Reorder the terms for easier multiplication:
an = -5 + 4(-4 + n)
an = -5 + (-4 * 4 + n * 4)
an = -5 + (-16 + 4n)

Combine like terms: -5 + -16 = -21
an = -21 + 4n

Solving
an = -21 + 4n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = -21n-1 + 4

Simplifying
a = -21n-1 + 4

Reorder the terms:
a = 4 + -21n-1

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