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Simplifying 21x + -25 = 9x + 47 Reorder the terms: -25 + 21x = 9x + 47 Reorder the terms: -25 + 21x = 47 + 9x Solving -25 + 21x = 47 + 9x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9x' to each side of the equation. -25 + 21x + -9x = 47 + 9x + -9x Combine like terms: 21x + -9x = 12x -25 + 12x = 47 + 9x + -9x Combine like terms: 9x + -9x = 0 -25 + 12x = 47 + 0 -25 + 12x = 47 Add '25' to each side of the equation. -25 + 25 + 12x = 47 + 25 Combine like terms: -25 + 25 = 0 0 + 12x = 47 + 25 12x = 47 + 25 Combine like terms: 47 + 25 = 72 12x = 72 Divide each side by '12'. x = 6 Simplifying x = 6
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