0.9=0.2+X-0.2X

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Solution for 0.9=0.2+X-0.2X equation:


Simplifying
0.9 = 0.2 + X + -0.2X

Combine like terms: X + -0.2X = 0.8X
0.9 = 0.2 + 0.8X

Solving
0.9 = 0.2 + 0.8X

Solving for variable 'X'.

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

Add '-0.8X' to each side of the equation.
0.9 + -0.8X = 0.2 + 0.8X + -0.8X

Combine like terms: 0.8X + -0.8X = 0.0
0.9 + -0.8X = 0.2 + 0.0
0.9 + -0.8X = 0.2

Add '-0.9' to each side of the equation.
0.9 + -0.9 + -0.8X = 0.2 + -0.9

Combine like terms: 0.9 + -0.9 = 0.0
0.0 + -0.8X = 0.2 + -0.9
-0.8X = 0.2 + -0.9

Combine like terms: 0.2 + -0.9 = -0.7
-0.8X = -0.7

Divide each side by '-0.8'.
X = 0.875

Simplifying
X = 0.875

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