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Simplifying -15x + -20 = 12x + 100 Reorder the terms: -20 + -15x = 12x + 100 Reorder the terms: -20 + -15x = 100 + 12x Solving -20 + -15x = 100 + 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. -20 + -15x + -12x = 100 + 12x + -12x Combine like terms: -15x + -12x = -27x -20 + -27x = 100 + 12x + -12x Combine like terms: 12x + -12x = 0 -20 + -27x = 100 + 0 -20 + -27x = 100 Add '20' to each side of the equation. -20 + 20 + -27x = 100 + 20 Combine like terms: -20 + 20 = 0 0 + -27x = 100 + 20 -27x = 100 + 20 Combine like terms: 100 + 20 = 120 -27x = 120 Divide each side by '-27'. x = -4.444444444 Simplifying x = -4.444444444
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