2X=.9-.1X

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Solution for 2X=.9-.1X equation: 


Simplifying
2X = 0.9 + -0.1X

Solving
2X = 0.9 + -0.1X

Solving for variable 'X'.

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

Add '0.1X' to each side of the equation.
2X + 0.1X = 0.9 + -0.1X + 0.1X

Combine like terms: 2X + 0.1X = 2.1X
2.1X = 0.9 + -0.1X + 0.1X

Combine like terms: -0.1X + 0.1X = 0.0
2.1X = 0.9 + 0.0
2.1X = 0.9

Divide each side by '2.1'.
X = 0.4285714286

Simplifying
X = 0.4285714286

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