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Simplifying x + 4.2 = 3x + -8.6 Reorder the terms: 4.2 + x = 3x + -8.6 Reorder the terms: 4.2 + x = -8.6 + 3x Solving 4.2 + x = -8.6 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 4.2 + x + -3x = -8.6 + 3x + -3x Combine like terms: x + -3x = -2x 4.2 + -2x = -8.6 + 3x + -3x Combine like terms: 3x + -3x = 0 4.2 + -2x = -8.6 + 0 4.2 + -2x = -8.6 Add '-4.2' to each side of the equation. 4.2 + -4.2 + -2x = -8.6 + -4.2 Combine like terms: 4.2 + -4.2 = 0.0 0.0 + -2x = -8.6 + -4.2 -2x = -8.6 + -4.2 Combine like terms: -8.6 + -4.2 = -12.8 -2x = -12.8 Divide each side by '-2'. x = 6.4 Simplifying x = 6.4
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