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Simplifying 8x + -21 = 2x + 13 Reorder the terms: -21 + 8x = 2x + 13 Reorder the terms: -21 + 8x = 13 + 2x Solving -21 + 8x = 13 + 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 + 8x + -2x = 13 + 2x + -2x Combine like terms: 8x + -2x = 6x -21 + 6x = 13 + 2x + -2x Combine like terms: 2x + -2x = 0 -21 + 6x = 13 + 0 -21 + 6x = 13 Add '21' to each side of the equation. -21 + 21 + 6x = 13 + 21 Combine like terms: -21 + 21 = 0 0 + 6x = 13 + 21 6x = 13 + 21 Combine like terms: 13 + 21 = 34 6x = 34 Divide each side by '6'. x = 5.666666667 Simplifying x = 5.666666667
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