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Simplifying 81 = 7z Solving 81 = 7z Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-7z' to each side of the equation. 81 + -7z = 7z + -7z Combine like terms: 7z + -7z = 0 81 + -7z = 0 Add '-81' to each side of the equation. 81 + -81 + -7z = 0 + -81 Combine like terms: 81 + -81 = 0 0 + -7z = 0 + -81 -7z = 0 + -81 Combine like terms: 0 + -81 = -81 -7z = -81 Divide each side by '-7'. z = 11.57142857 Simplifying z = 11.57142857
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