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Simplifying 3x3 + -21 = 0 Reorder the terms: -21 + 3x3 = 0 Solving -21 + 3x3 = 0 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 + 3x3 = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 3x3 = 0 + 21 3x3 = 0 + 21 Combine like terms: 0 + 21 = 21 3x3 = 21 Divide each side by '3'. x3 = 7 Simplifying x3 = 7 Reorder the terms: -7 + x3 = 7 + -7 Combine like terms: 7 + -7 = 0 -7 + x3 = 0 The solution to this equation could not be determined.
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