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Simplifying 7x + -21 = -5x + 75 Reorder the terms: -21 + 7x = -5x + 75 Reorder the terms: -21 + 7x = 75 + -5x Solving -21 + 7x = 75 + -5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5x' to each side of the equation. -21 + 7x + 5x = 75 + -5x + 5x Combine like terms: 7x + 5x = 12x -21 + 12x = 75 + -5x + 5x Combine like terms: -5x + 5x = 0 -21 + 12x = 75 + 0 -21 + 12x = 75 Add '21' to each side of the equation. -21 + 21 + 12x = 75 + 21 Combine like terms: -21 + 21 = 0 0 + 12x = 75 + 21 12x = 75 + 21 Combine like terms: 75 + 21 = 96 12x = 96 Divide each side by '12'. x = 8 Simplifying x = 8
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