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Simplifying 9 + 7z = 0 Solving 9 + 7z = 0 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 + 7z = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 7z = 0 + -9 7z = 0 + -9 Combine like terms: 0 + -9 = -9 7z = -9 Divide each side by '7'. z = -1.285714286 Simplifying z = -1.285714286
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