x[n]=-2u[n]

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Solution for x[n]=-2u[n] equation: 


Simplifying
x[n] = -2u[n]

Multiply x * n
nx = -2u[n]

Multiply u * n
nx = -2nu

Solving
nx = -2nu

Solving for variable 'n'.

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

Add '2nu' to each side of the equation.
2nu + nx = -2nu + 2nu

Combine like terms: -2nu + 2nu = 0
2nu + nx = 0

Factor out the Greatest Common Factor (GCF), 'n'.
n(2u + x) = 0


Subproblem 1
Set the factor 'n' equal to zero and attempt to solve:

Simplifying
n = 0

Solving
n = 0

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

Simplifying
n = 0

Subproblem 2
Set the factor '(2u + x)' equal to zero and attempt to solve:

Simplifying
2u + x = 0

Solving
2u + x = 0

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

Add '-2u' to each side of the equation.
2u + -2u + x = 0 + -2u

Combine like terms: 2u + -2u = 0
0 + x = 0 + -2u
x = 0 + -2u
Remove the zero:
x = -2u

Add '-1x' to each side of the equation.
x + -1x = -2u + -1x

Combine like terms: x + -1x = 0
0 = -2u + -1x

Simplifying
0 = -2u + -1x

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
n = {0}

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