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Simplifying 3x + -9 = -18x Reorder the terms: -9 + 3x = -18x Solving -9 + 3x = -18x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18x' to each side of the equation. -9 + 3x + 18x = -18x + 18x Combine like terms: 3x + 18x = 21x -9 + 21x = -18x + 18x Combine like terms: -18x + 18x = 0 -9 + 21x = 0 Add '9' to each side of the equation. -9 + 9 + 21x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 21x = 0 + 9 21x = 0 + 9 Combine like terms: 0 + 9 = 9 21x = 9 Divide each side by '21'. x = 0.4285714286 Simplifying x = 0.4285714286
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