y(n)+0.1y(n-1)-0.2y(n-2)=x(n)+x(n-1)

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Solution for y(n)+0.1y(n-1)-0.2y(n-2)=x(n)+x(n-1) equation:


Simplifying
y(n) + 0.1y(n + -1) + -0.2y(n + -2) = x(n) + x(n + -1)

Multiply y * n
ny + 0.1y(n + -1) + -0.2y(n + -2) = x(n) + x(n + -1)

Reorder the terms:
ny + 0.1y(-1 + n) + -0.2y(n + -2) = x(n) + x(n + -1)
ny + (-1 * 0.1y + n * 0.1y) + -0.2y(n + -2) = x(n) + x(n + -1)

Reorder the terms:
ny + (0.1ny + -0.1y) + -0.2y(n + -2) = x(n) + x(n + -1)
ny + (0.1ny + -0.1y) + -0.2y(n + -2) = x(n) + x(n + -1)

Reorder the terms:
ny + 0.1ny + -0.1y + -0.2y(-2 + n) = x(n) + x(n + -1)
ny + 0.1ny + -0.1y + (-2 * -0.2y + n * -0.2y) = x(n) + x(n + -1)

Reorder the terms:
ny + 0.1ny + -0.1y + (-0.2ny + 0.4y) = x(n) + x(n + -1)
ny + 0.1ny + -0.1y + (-0.2ny + 0.4y) = x(n) + x(n + -1)

Reorder the terms:
ny + 0.1ny + -0.2ny + -0.1y + 0.4y = x(n) + x(n + -1)

Combine like terms: ny + 0.1ny = 1.1ny
1.1ny + -0.2ny + -0.1y + 0.4y = x(n) + x(n + -1)

Combine like terms: 1.1ny + -0.2ny = 0.9ny
0.9ny + -0.1y + 0.4y = x(n) + x(n + -1)

Combine like terms: -0.1y + 0.4y = 0.3y
0.9ny + 0.3y = x(n) + x(n + -1)

Multiply x * n
0.9ny + 0.3y = nx + x(n + -1)

Reorder the terms:
0.9ny + 0.3y = nx + x(-1 + n)
0.9ny + 0.3y = nx + (-1 * x + n * x)

Reorder the terms:
0.9ny + 0.3y = nx + (nx + -1x)
0.9ny + 0.3y = nx + (nx + -1x)

Combine like terms: nx + nx = 2nx
0.9ny + 0.3y = 2nx + -1x

Solving
0.9ny + 0.3y = 2nx + -1x

Solving for variable 'n'.

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

Add '-2nx' to each side of the equation.
0.9ny + -2nx + 0.3y = 2nx + -2nx + -1x

Reorder the terms:
-2nx + 0.9ny + 0.3y = 2nx + -2nx + -1x

Combine like terms: 2nx + -2nx = 0
-2nx + 0.9ny + 0.3y = 0 + -1x
-2nx + 0.9ny + 0.3y = -1x

Add '-0.3y' to each side of the equation.
-2nx + 0.9ny + 0.3y + -0.3y = -1x + -0.3y

Combine like terms: 0.3y + -0.3y = 0.0
-2nx + 0.9ny + 0.0 = -1x + -0.3y
-2nx + 0.9ny = -1x + -0.3y

Reorder the terms:
-2nx + 0.9ny + x + 0.3y = -1x + x + -0.3y + 0.3y

Combine like terms: -1x + x = 0
-2nx + 0.9ny + x + 0.3y = 0 + -0.3y + 0.3y
-2nx + 0.9ny + x + 0.3y = -0.3y + 0.3y

Combine like terms: -0.3y + 0.3y = 0.0
-2nx + 0.9ny + x + 0.3y = 0.0

The solution to this equation could not be determined.

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