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Simplifying 3.9 = 1.5(2.2 + -1.2x) 3.9 = (2.2 * 1.5 + -1.2x * 1.5) 3.9 = (3.3 + -1.8x) Solving 3.9 = 3.3 + -1.8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8x' to each side of the equation. 3.9 + 1.8x = 3.3 + -1.8x + 1.8x Combine like terms: -1.8x + 1.8x = 0.0 3.9 + 1.8x = 3.3 + 0.0 3.9 + 1.8x = 3.3 Add '-3.9' to each side of the equation. 3.9 + -3.9 + 1.8x = 3.3 + -3.9 Combine like terms: 3.9 + -3.9 = 0.0 0.0 + 1.8x = 3.3 + -3.9 1.8x = 3.3 + -3.9 Combine like terms: 3.3 + -3.9 = -0.6 1.8x = -0.6 Divide each side by '1.8'. x = -0.3333333333 Simplifying x = -0.3333333333
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