X+2x=-15-6

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Solution for X+2x=-15-6 equation: 


Simplifying
X + 2x = -15 + -6

Combine like terms: -15 + -6 = -21
X + 2x = -21

Solving
X + 2x = -21

Solving for variable 'X'.

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

Add '-2x' to each side of the equation.
X + 2x + -2x = -21 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = -21 + -2x
X = -21 + -2x

Simplifying
X = -21 + -2x

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