An=15+(n-1)-4

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Solution for An=15+(n-1)-4 equation: 


Simplifying
An = 15 + (n + -1) + -4

Reorder the terms:
nA = 15 + (-1 + n) + -4

Remove parenthesis around (-1 + n)
nA = 15 + -1 + n + -4

Reorder the terms:
nA = 15 + -1 + -4 + n

Combine like terms: 15 + -1 = 14
nA = 14 + -4 + n

Combine like terms: 14 + -4 = 10
nA = 10 + n

Solving
nA = 10 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
-1n + nA = 10 + n + -1n

Combine like terms: n + -1n = 0
-1n + nA = 10 + 0
-1n + nA = 10

Reorder the terms:
-10 + -1n + nA = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + -1n + nA = 0

The solution to this equation could not be determined.

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