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Simplifying 5x + -21 = 2x + 8 Reorder the terms: -21 + 5x = 2x + 8 Reorder the terms: -21 + 5x = 8 + 2x Solving -21 + 5x = 8 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -21 + 5x + -2x = 8 + 2x + -2x Combine like terms: 5x + -2x = 3x -21 + 3x = 8 + 2x + -2x Combine like terms: 2x + -2x = 0 -21 + 3x = 8 + 0 -21 + 3x = 8 Add '21' to each side of the equation. -21 + 21 + 3x = 8 + 21 Combine like terms: -21 + 21 = 0 0 + 3x = 8 + 21 3x = 8 + 21 Combine like terms: 8 + 21 = 29 3x = 29 Divide each side by '3'. x = 9.666666667 Simplifying x = 9.666666667
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