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Simplifying 15 + -1(-9x) + 2x + -1(-12) = 0 Remove parenthesis around (-9x) 15 + -1 * -9x + 2x + -1(-12) = 0 Multiply -1 * -9 15 + 9x + 2x + -1(-12) = 0 Multiply -1 * -12 15 + 9x + 2x + 12 = 0 Reorder the terms: 15 + 12 + 9x + 2x = 0 Combine like terms: 15 + 12 = 27 27 + 9x + 2x = 0 Combine like terms: 9x + 2x = 11x 27 + 11x = 0 Solving 27 + 11x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-27' to each side of the equation. 27 + -27 + 11x = 0 + -27 Combine like terms: 27 + -27 = 0 0 + 11x = 0 + -27 11x = 0 + -27 Combine like terms: 0 + -27 = -27 11x = -27 Divide each side by '11'. x = -2.454545455 Simplifying x = -2.454545455
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