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Simplifying 15x + -12 = 12x Reorder the terms: -12 + 15x = 12x Solving -12 + 15x = 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. -12 + 15x + -12x = 12x + -12x Combine like terms: 15x + -12x = 3x -12 + 3x = 12x + -12x Combine like terms: 12x + -12x = 0 -12 + 3x = 0 Add '12' to each side of the equation. -12 + 12 + 3x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + 3x = 0 + 12 3x = 0 + 12 Combine like terms: 0 + 12 = 12 3x = 12 Divide each side by '3'. x = 4 Simplifying x = 4
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