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Simplifying -21 + -9x = 68 + -30x Solving -21 + -9x = 68 + -30x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '30x' to each side of the equation. -21 + -9x + 30x = 68 + -30x + 30x Combine like terms: -9x + 30x = 21x -21 + 21x = 68 + -30x + 30x Combine like terms: -30x + 30x = 0 -21 + 21x = 68 + 0 -21 + 21x = 68 Add '21' to each side of the equation. -21 + 21 + 21x = 68 + 21 Combine like terms: -21 + 21 = 0 0 + 21x = 68 + 21 21x = 68 + 21 Combine like terms: 68 + 21 = 89 21x = 89 Divide each side by '21'. x = 4.238095238 Simplifying x = 4.238095238
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