A(n)=4+(n-1)(3)

Solution for A(n)=4+(n-1)(3) equation:

Simplifying
A(n) = 4 + (n + -1)(3)

Multiply A * n
nA = 4 + (n + -1)(3)

Reorder the terms:
nA = 4 + (-1 + n)(3)

Reorder the terms for easier multiplication:
nA = 4 + 3(-1 + n)
nA = 4 + (-1 * 3 + n * 3)
nA = 4 + (-3 + 3n)

Combine like terms: 4 + -3 = 1
nA = 1 + 3n

Solving
nA = 1 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
-3n + nA = 1 + 3n + -3n

Combine like terms: 3n + -3n = 0
-3n + nA = 1 + 0
-3n + nA = 1

Reorder the terms:
-1 + -3n + nA = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + -3n + nA = 0

The solution to this equation could not be determined.