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Simplifying 8x + 21 = 13 + -6x Reorder the terms: 21 + 8x = 13 + -6x Solving 21 + 8x = 13 + -6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6x' to each side of the equation. 21 + 8x + 6x = 13 + -6x + 6x Combine like terms: 8x + 6x = 14x 21 + 14x = 13 + -6x + 6x Combine like terms: -6x + 6x = 0 21 + 14x = 13 + 0 21 + 14x = 13 Add '-21' to each side of the equation. 21 + -21 + 14x = 13 + -21 Combine like terms: 21 + -21 = 0 0 + 14x = 13 + -21 14x = 13 + -21 Combine like terms: 13 + -21 = -8 14x = -8 Divide each side by '14'. x = -0.5714285714 Simplifying x = -0.5714285714
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