X=(40-2X)

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Solution for X=(40-2X) equation: 


Simplifying
X = (40 + -2X)

Remove parenthesis around (40 + -2X)
X = 40 + -2X

Solving
X = 40 + -2X

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 = 40 + -2X + 2X

Combine like terms: X + 2X = 3X
3X = 40 + -2X + 2X

Combine like terms: -2X + 2X = 0
3X = 40 + 0
3X = 40

Divide each side by '3'.
X = 13.33333333

Simplifying
X = 13.33333333

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