X-y-2y=4

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Solution for X-y-2y=4 equation: 


Simplifying
X + -1y + -2y = 4

Combine like terms: -1y + -2y = -3y
X + -3y = 4

Solving
X + -3y = 4

Solving for variable 'X'.

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

Add '3y' to each side of the equation.
X + -3y + 3y = 4 + 3y

Combine like terms: -3y + 3y = 0
X + 0 = 4 + 3y
X = 4 + 3y

Simplifying
X = 4 + 3y

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