A(n)=3+(n-1)(1.5)

Solution for A(n)=3+(n-1)(1.5) equation:

Simplifying
A(n) = 3 + (n + -1)(1.5)

Multiply A * n
nA = 3 + (n + -1)(1.5)

Reorder the terms:
nA = 3 + (-1 + n)(1.5)

Reorder the terms for easier multiplication:
nA = 3 + 1.5(-1 + n)
nA = 3 + (-1 * 1.5 + n * 1.5)
nA = 3 + (-1.5 + 1.5n)

Combine like terms: 3 + -1.5 = 1.5
nA = 1.5 + 1.5n

Solving
nA = 1.5 + 1.5n

Solving for variable 'n'.

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

Add '-1.5n' to each side of the equation.
-1.5n + nA = 1.5 + 1.5n + -1.5n

Combine like terms: 1.5n + -1.5n = 0.0
-1.5n + nA = 1.5 + 0.0
-1.5n + nA = 1.5

Reorder the terms:
-1.5 + -1.5n + nA = 1.5 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
-1.5 + -1.5n + nA = 0.0

The solution to this equation could not be determined.