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Simplifying 9x + 1 = -12x + 15 Reorder the terms: 1 + 9x = -12x + 15 Reorder the terms: 1 + 9x = 15 + -12x Solving 1 + 9x = 15 + -12x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12x' to each side of the equation. 1 + 9x + 12x = 15 + -12x + 12x Combine like terms: 9x + 12x = 21x 1 + 21x = 15 + -12x + 12x Combine like terms: -12x + 12x = 0 1 + 21x = 15 + 0 1 + 21x = 15 Add '-1' to each side of the equation. 1 + -1 + 21x = 15 + -1 Combine like terms: 1 + -1 = 0 0 + 21x = 15 + -1 21x = 15 + -1 Combine like terms: 15 + -1 = 14 21x = 14 Divide each side by '21'. x = 0.6666666667 Simplifying x = 0.6666666667
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