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Simplifying 8x2 + 21 = -21 Reorder the terms: 21 + 8x2 = -21 Solving 21 + 8x2 = -21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 8x2 = -21 + -21 Combine like terms: 21 + -21 = 0 0 + 8x2 = -21 + -21 8x2 = -21 + -21 Combine like terms: -21 + -21 = -42 8x2 = -42 Divide each side by '8'. x2 = -5.25 Simplifying x2 = -5.25 Reorder the terms: 5.25 + x2 = -5.25 + 5.25 Combine like terms: -5.25 + 5.25 = 0.00 5.25 + x2 = 0.00 The solution to this equation could not be determined.
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