A(n)=2+(n-1)(-2.5)

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Solution for A(n)=2+(n-1)(-2.5) equation:


Simplifying
A(n) = 2 + (n + -1)(-2.5)

Multiply A * n
nA = 2 + (n + -1)(-2.5)

Reorder the terms:
nA = 2 + (-1 + n)(-2.5)

Reorder the terms for easier multiplication:
nA = 2 + -2.5(-1 + n)
nA = 2 + (-1 * -2.5 + n * -2.5)
nA = 2 + (2.5 + -2.5n)

Combine like terms: 2 + 2.5 = 4.5
nA = 4.5 + -2.5n

Solving
nA = 4.5 + -2.5n

Solving for variable 'n'.

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

Add '2.5n' to each side of the equation.
2.5n + nA = 4.5 + -2.5n + 2.5n

Combine like terms: -2.5n + 2.5n = 0.0
2.5n + nA = 4.5 + 0.0
2.5n + nA = 4.5

Reorder the terms:
-4.5 + 2.5n + nA = 4.5 + -4.5

Combine like terms: 4.5 + -4.5 = 0.0
-4.5 + 2.5n + nA = 0.0

The solution to this equation could not be determined.

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