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Simplifying 0.9 + -0.1x = 0.2x Solving 0.9 + -0.1x = 0.2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.2x' to each side of the equation. 0.9 + -0.1x + -0.2x = 0.2x + -0.2x Combine like terms: -0.1x + -0.2x = -0.3x 0.9 + -0.3x = 0.2x + -0.2x Combine like terms: 0.2x + -0.2x = 0.0 0.9 + -0.3x = 0.0 Add '-0.9' to each side of the equation. 0.9 + -0.9 + -0.3x = 0.0 + -0.9 Combine like terms: 0.9 + -0.9 = 0.0 0.0 + -0.3x = 0.0 + -0.9 -0.3x = 0.0 + -0.9 Combine like terms: 0.0 + -0.9 = -0.9 -0.3x = -0.9 Divide each side by '-0.3'. x = 3 Simplifying x = 3
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