(x-y)-(2x+3y)+(-x-7y)=

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Solution for (x-y)-(2x+3y)+(-x-7y)= equation:


Simplifying
(x + -1y) + -1(2x + 3y) + (-1x + -7y) = 0

Remove parenthesis around (x + -1y)
x + -1y + -1(2x + 3y) + (-1x + -7y) = 0
x + -1y + (2x * -1 + 3y * -1) + (-1x + -7y) = 0
x + -1y + (-2x + -3y) + (-1x + -7y) = 0

Remove parenthesis around (-1x + -7y)
x + -1y + -2x + -3y + -1x + -7y = 0

Reorder the terms:
x + -2x + -1x + -1y + -3y + -7y = 0

Combine like terms: x + -2x = -1x
-1x + -1x + -1y + -3y + -7y = 0

Combine like terms: -1x + -1x = -2x
-2x + -1y + -3y + -7y = 0

Combine like terms: -1y + -3y = -4y
-2x + -4y + -7y = 0

Combine like terms: -4y + -7y = -11y
-2x + -11y = 0

Solving
-2x + -11y = 0

Solving for variable 'x'.

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

Add '11y' to each side of the equation.
-2x + -11y + 11y = 0 + 11y

Combine like terms: -11y + 11y = 0
-2x + 0 = 0 + 11y
-2x = 0 + 11y
Remove the zero:
-2x = 11y

Divide each side by '-2'.
x = -5.5y

Simplifying
x = -5.5y

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