N*2-n=90

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Solution for N*2-n=90 equation: 


Simplifying
N * 2 + -1n = 90

Reorder the terms for easier multiplication:
2N + -1n = 90

Solving
2N + -1n = 90

Solving for variable 'N'.

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

Add 'n' to each side of the equation.
2N + -1n + n = 90 + n

Combine like terms: -1n + n = 0
2N + 0 = 90 + n
2N = 90 + n

Divide each side by '2'.
N = 45 + 0.5n

Simplifying
N = 45 + 0.5n

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