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Simplifying z + 20 = 6z Reorder the terms: 20 + z = 6z Solving 20 + z = 6z Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-6z' to each side of the equation. 20 + z + -6z = 6z + -6z Combine like terms: z + -6z = -5z 20 + -5z = 6z + -6z Combine like terms: 6z + -6z = 0 20 + -5z = 0 Add '-20' to each side of the equation. 20 + -20 + -5z = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -5z = 0 + -20 -5z = 0 + -20 Combine like terms: 0 + -20 = -20 -5z = -20 Divide each side by '-5'. z = 4 Simplifying z = 4
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