X+(2x)=31

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Solution for X+(2x)=31 equation: 


Simplifying
X + (2x) = 31

Solving
X + (2x) = 31

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) = 31 + (-2x)

Combine like terms: (2x) + (-2x) = 0
X + 0 = 31 + (-2x)
X = 31 + (-2x)

Simplifying
X = 31 + (-2x)

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