n(x-y)+(n-9)(y-x)=0

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Solution for n(x-y)+(n-9)(y-x)=0 equation:


Simplifying
n(x + -1y) + (n + -9)(y + -1x) = 0
(x * n + -1y * n) + (n + -9)(y + -1x) = 0
(nx + -1ny) + (n + -9)(y + -1x) = 0

Reorder the terms:
nx + -1ny + (-9 + n)(y + -1x) = 0

Reorder the terms:
nx + -1ny + (-9 + n)(-1x + y) = 0

Multiply (-9 + n) * (-1x + y)
nx + -1ny + (-9(-1x + y) + n(-1x + y)) = 0
nx + -1ny + ((-1x * -9 + y * -9) + n(-1x + y)) = 0
nx + -1ny + ((9x + -9y) + n(-1x + y)) = 0
nx + -1ny + (9x + -9y + (-1x * n + y * n)) = 0
nx + -1ny + (9x + -9y + (-1nx + ny)) = 0

Reorder the terms:
nx + -1ny + (-1nx + ny + 9x + -9y) = 0
nx + -1ny + (-1nx + ny + 9x + -9y) = 0

Reorder the terms:
nx + -1nx + -1ny + ny + 9x + -9y = 0

Combine like terms: nx + -1nx = 0
0 + -1ny + ny + 9x + -9y = 0
-1ny + ny + 9x + -9y = 0

Combine like terms: -1ny + ny = 0
0 + 9x + -9y = 0
9x + -9y = 0

Solving
9x + -9y = 0

Solving for variable 'x'.

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

Add '9y' to each side of the equation.
9x + -9y + 9y = 0 + 9y

Combine like terms: -9y + 9y = 0
9x + 0 = 0 + 9y
9x = 0 + 9y
Remove the zero:
9x = 9y

Divide each side by '9'.
x = y

Simplifying
x = y

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