an=3.5+6(n-1)

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Solution for an=3.5+6(n-1) equation: 


Simplifying
an = 3.5 + 6(n + -1)

Reorder the terms:
an = 3.5 + 6(-1 + n)
an = 3.5 + (-1 * 6 + n * 6)
an = 3.5 + (-6 + 6n)

Combine like terms: 3.5 + -6 = -2.5
an = -2.5 + 6n

Solving
an = -2.5 + 6n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = -2.5n-1 + 6

Simplifying
a = -2.5n-1 + 6

Reorder the terms:
a = 6 + -2.5n-1

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