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Simplifying -42z = 7z Solving -42z = 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. -42z + -7z = 7z + -7z Combine like terms: -42z + -7z = -49z -49z = 7z + -7z Combine like terms: 7z + -7z = 0 -49z = 0 Divide each side by '-49'. z = 0 Simplifying z = 0
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