x+3x+n=0

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Solution for x+3x+n=0 equation: 


Simplifying
x + 3x + n = 0

Reorder the terms:
n + x + 3x = 0

Combine like terms: x + 3x = 4x
n + 4x = 0

Solving
n + 4x = 0

Solving for variable 'n'.

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

Add '-4x' to each side of the equation.
n + 4x + -4x = 0 + -4x

Combine like terms: 4x + -4x = 0
n + 0 = 0 + -4x
n = 0 + -4x
Remove the zero:
n = -4x

Simplifying
n = -4x

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