A(n)=-2.2+(n-1)(-1)

Solution for A(n)=-2.2+(n-1)(-1) equation:

Simplifying
A(n) = -2.2 + (n + -1)(-1)

Multiply A * n
nA = -2.2 + (n + -1)(-1)

Reorder the terms:
nA = -2.2 + (-1 + n)(-1)

Reorder the terms for easier multiplication:
nA = -2.2 + -1(-1 + n)
nA = -2.2 + (-1 * -1 + n * -1)
nA = -2.2 + (1 + -1n)

Combine like terms: -2.2 + 1 = -1.2
nA = -1.2 + -1n

Solving
nA = -1.2 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
n + nA = -1.2 + -1n + n

Combine like terms: -1n + n = 0
n + nA = -1.2 + 0
n + nA = -1.2

Reorder the terms:
1.2 + n + nA = -1.2 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
1.2 + n + nA = 0.0

The solution to this equation could not be determined.