a(n)=12(n-1)(3)

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Solution for a(n)=12(n-1)(3) equation: 


Simplifying
a(n) = 12(n + -1)(3)

Multiply a * n
an = 12(n + -1)(3)

Reorder the terms:
an = 12(-1 + n)(3)

Reorder the terms for easier multiplication:
an = 12 * 3(-1 + n)

Multiply 12 * 3
an = 36(-1 + n)
an = (-1 * 36 + n * 36)
an = (-36 + 36n)

Solving
an = -36 + 36n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = -36n-1 + 36

Simplifying
a = -36n-1 + 36

Reorder the terms:
a = 36 + -36n-1

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