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Simplifying -13x + -13 = 8x + 9 Reorder the terms: -13 + -13x = 8x + 9 Reorder the terms: -13 + -13x = 9 + 8x Solving -13 + -13x = 9 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. -13 + -13x + -8x = 9 + 8x + -8x Combine like terms: -13x + -8x = -21x -13 + -21x = 9 + 8x + -8x Combine like terms: 8x + -8x = 0 -13 + -21x = 9 + 0 -13 + -21x = 9 Add '13' to each side of the equation. -13 + 13 + -21x = 9 + 13 Combine like terms: -13 + 13 = 0 0 + -21x = 9 + 13 -21x = 9 + 13 Combine like terms: 9 + 13 = 22 -21x = 22 Divide each side by '-21'. x = -1.047619048 Simplifying x = -1.047619048
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