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Simplifying z2 + 9 = -20 Reorder the terms: 9 + z2 = -20 Solving 9 + z2 = -20 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + z2 = -20 + -9 Combine like terms: 9 + -9 = 0 0 + z2 = -20 + -9 z2 = -20 + -9 Combine like terms: -20 + -9 = -29 z2 = -29 Simplifying z2 = -29 Reorder the terms: 29 + z2 = -29 + 29 Combine like terms: -29 + 29 = 0 29 + z2 = 0 The solution to this equation could not be determined.
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