2y[n]+y[n-1]-3y[n-2]=x[n+1]+7x[n]

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Solution for 2y[n]+y[n-1]-3y[n-2]=x[n+1]+7x[n] equation:


Simplifying
2y[n] + y[n + -1] + -3y[n + -2] = x[n + 1] + 7x[n]

Multiply y * n
2ny + y[n + -1] + -3y[n + -2] = x[n + 1] + 7x[n]

Reorder the terms:
2ny + y[-1 + n] + -3y[n + -2] = x[n + 1] + 7x[n]
2ny + [-1 * y + n * y] + -3y[n + -2] = x[n + 1] + 7x[n]

Reorder the terms:
2ny + [ny + -1y] + -3y[n + -2] = x[n + 1] + 7x[n]
2ny + [ny + -1y] + -3y[n + -2] = x[n + 1] + 7x[n]

Reorder the terms:
2ny + ny + -1y + -3y[-2 + n] = x[n + 1] + 7x[n]
2ny + ny + -1y + [-2 * -3y + n * -3y] = x[n + 1] + 7x[n]

Reorder the terms:
2ny + ny + -1y + [-3ny + 6y] = x[n + 1] + 7x[n]
2ny + ny + -1y + [-3ny + 6y] = x[n + 1] + 7x[n]

Reorder the terms:
2ny + ny + -3ny + -1y + 6y = x[n + 1] + 7x[n]

Combine like terms: 2ny + ny = 3ny
3ny + -3ny + -1y + 6y = x[n + 1] + 7x[n]

Combine like terms: 3ny + -3ny = 0
0 + -1y + 6y = x[n + 1] + 7x[n]
-1y + 6y = x[n + 1] + 7x[n]

Combine like terms: -1y + 6y = 5y
5y = x[n + 1] + 7x[n]

Reorder the terms:
5y = x[1 + n] + 7x[n]
5y = [1 * x + n * x] + 7x[n]

Reorder the terms:
5y = [nx + 1x] + 7x[n]
5y = [nx + 1x] + 7x[n]

Multiply x * n
5y = nx + 1x + 7nx

Reorder the terms:
5y = nx + 7nx + 1x

Combine like terms: nx + 7nx = 8nx
5y = 8nx + 1x

Solving
5y = 8nx + 1x

Solving for variable 'y'.

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

Divide each side by '5'.
y = 1.6nx + 0.2x

Simplifying
y = 1.6nx + 0.2x

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