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Simplifying -9x + -39 = 21 + -11x Reorder the terms: -39 + -9x = 21 + -11x Solving -39 + -9x = 21 + -11x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11x' to each side of the equation. -39 + -9x + 11x = 21 + -11x + 11x Combine like terms: -9x + 11x = 2x -39 + 2x = 21 + -11x + 11x Combine like terms: -11x + 11x = 0 -39 + 2x = 21 + 0 -39 + 2x = 21 Add '39' to each side of the equation. -39 + 39 + 2x = 21 + 39 Combine like terms: -39 + 39 = 0 0 + 2x = 21 + 39 2x = 21 + 39 Combine like terms: 21 + 39 = 60 2x = 60 Divide each side by '2'. x = 30 Simplifying x = 30
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