x+(x+y)=-1

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Solution for x+(x+y)=-1 equation: 


Simplifying
x + (x + y) = -1

Remove parenthesis around (x + y)
x + x + y = -1

Combine like terms: x + x = 2x
2x + y = -1

Solving
2x + y = -1

Solving for variable 'x'.

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

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

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

Divide each side by '2'.
x = -0.5 + -0.5y

Simplifying
x = -0.5 + -0.5y

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