3n+4=-(-n-18)

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Solution for 3n+4=-(-n-18) equation:


Simplifying
3n + 4 = -1(-1n + -18)

Reorder the terms:
4 + 3n = -1(-1n + -18)

Reorder the terms:
4 + 3n = -1(-18 + -1n)
4 + 3n = (-18 * -1 + -1n * -1)
4 + 3n = (18 + 1n)

Solving
4 + 3n = 18 + 1n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
4 + 3n + -1n = 18 + 1n + -1n

Combine like terms: 3n + -1n = 2n
4 + 2n = 18 + 1n + -1n

Combine like terms: 1n + -1n = 0
4 + 2n = 18 + 0
4 + 2n = 18

Add '-4' to each side of the equation.
4 + -4 + 2n = 18 + -4

Combine like terms: 4 + -4 = 0
0 + 2n = 18 + -4
2n = 18 + -4

Combine like terms: 18 + -4 = 14
2n = 14

Divide each side by '2'.
n = 7

Simplifying
n = 7

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