18=4n-n

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Solution for 18=4n-n equation:


Simplifying
18 = 4n + -1n

Combine like terms: 4n + -1n = 3n
18 = 3n

Solving
18 = 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.
18 + -3n = 3n + -3n

Combine like terms: 3n + -3n = 0
18 + -3n = 0

Add '-18' to each side of the equation.
18 + -18 + -3n = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -3n = 0 + -18
-3n = 0 + -18

Combine like terms: 0 + -18 = -18
-3n = -18

Divide each side by '-3'.
n = 6

Simplifying
n = 6

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