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Simplifying x3 + -21 = -20 Reorder the terms: -21 + x3 = -20 Solving -21 + x3 = -20 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 + x3 = -20 + 21 Combine like terms: -21 + 21 = 0 0 + x3 = -20 + 21 x3 = -20 + 21 Combine like terms: -20 + 21 = 1 x3 = 1 Simplifying x3 = 1 Reorder the terms: -1 + x3 = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + x3 = 0 The solution to this equation could not be determined.
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