2n=90-(n+18)

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Solution for 2n=90-(n+18) equation:


Simplifying
2n = 90 + -1(n + 18)

Reorder the terms:
2n = 90 + -1(18 + n)
2n = 90 + (18 * -1 + n * -1)
2n = 90 + (-18 + -1n)

Combine like terms: 90 + -18 = 72
2n = 72 + -1n

Solving
2n = 72 + -1n

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 + n = 72 + -1n + n

Combine like terms: 2n + n = 3n
3n = 72 + -1n + n

Combine like terms: -1n + n = 0
3n = 72 + 0
3n = 72

Divide each side by '3'.
n = 24

Simplifying
n = 24

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