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Simplifying 7z + -3 = 42 Reorder the terms: -3 + 7z = 42 Solving -3 + 7z = 42 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 7z = 42 + 3 Combine like terms: -3 + 3 = 0 0 + 7z = 42 + 3 7z = 42 + 3 Combine like terms: 42 + 3 = 45 7z = 45 Divide each side by '7'. z = 6.428571429 Simplifying z = 6.428571429
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