-2x-y=1

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Solution for -2x-y=1 equation: 


Simplifying
-2x + -1y = 1

Solving
-2x + -1y = 1

Solving for variable 'x'.

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

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

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

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

Simplifying
x = -0.5 + -0.5y

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