A(n)=-2.1+(n-1)(-1.1)

Solution for A(n)=-2.1+(n-1)(-1.1) equation:

Simplifying
A(n) = -2.1 + (n + -1)(-1.1)

Multiply A * n
nA = -2.1 + (n + -1)(-1.1)

Reorder the terms:
nA = -2.1 + (-1 + n)(-1.1)

Reorder the terms for easier multiplication:
nA = -2.1 + -1.1(-1 + n)
nA = -2.1 + (-1 * -1.1 + n * -1.1)
nA = -2.1 + (1.1 + -1.1n)

Combine like terms: -2.1 + 1.1 = -1
nA = -1 + -1.1n

Solving
nA = -1 + -1.1n

Solving for variable 'n'.

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

Add '1.1n' to each side of the equation.
1.1n + nA = -1 + -1.1n + 1.1n

Combine like terms: -1.1n + 1.1n = 0.0
1.1n + nA = -1 + 0.0
1.1n + nA = -1

Reorder the terms:
1 + 1.1n + nA = -1 + 1

Combine like terms: -1 + 1 = 0
1 + 1.1n + nA = 0

The solution to this equation could not be determined.