An=7-2n

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Solution for An=7-2n equation: 


Simplifying
An = 7 + -2n

Solving
nA = 7 + -2n

Solving for variable 'n'.

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

Add '2n' to each side of the equation.
2n + nA = 7 + -2n + 2n

Combine like terms: -2n + 2n = 0
2n + nA = 7 + 0
2n + nA = 7

Reorder the terms:
-7 + 2n + nA = 7 + -7

Combine like terms: 7 + -7 = 0
-7 + 2n + nA = 0

The solution to this equation could not be determined.

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