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Simplifying 2x2 + -15 = -21 Reorder the terms: -15 + 2x2 = -21 Solving -15 + 2x2 = -21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 2x2 = -21 + 15 Combine like terms: -15 + 15 = 0 0 + 2x2 = -21 + 15 2x2 = -21 + 15 Combine like terms: -21 + 15 = -6 2x2 = -6 Divide each side by '2'. x2 = -3 Simplifying x2 = -3 Reorder the terms: 3 + x2 = -3 + 3 Combine like terms: -3 + 3 = 0 3 + x2 = 0 The solution to this equation could not be determined.
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