18=5n-8n

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Solution for 18=5n-8n equation:


Simplifying
18 = 5n + -8n

Combine like terms: 5n + -8n = -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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