an=-3x(3)(n-1)

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Solution for an=-3x(3)(n-1) equation: 


Simplifying
an = -3x(3)(n + -1)

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

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

Multiply -3 * 3
an = -9x(-1 + n)
an = (-1 * -9x + n * -9x)

Reorder the terms:
an = (-9nx + 9x)
an = (-9nx + 9x)

Solving
an = -9nx + 9x

Solving for variable 'a'.

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

Divide each side by 'n'.
a = -9x + 9n-1x

Simplifying
a = -9x + 9n-1x

Reorder the terms:
a = 9n-1x + -9x

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