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Simplifying (7z + 2) = 4z Reorder the terms: (2 + 7z) = 4z Remove parenthesis around (2 + 7z) 2 + 7z = 4z Solving 2 + 7z = 4z Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-4z' to each side of the equation. 2 + 7z + -4z = 4z + -4z Combine like terms: 7z + -4z = 3z 2 + 3z = 4z + -4z Combine like terms: 4z + -4z = 0 2 + 3z = 0 Add '-2' to each side of the equation. 2 + -2 + 3z = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3z = 0 + -2 3z = 0 + -2 Combine like terms: 0 + -2 = -2 3z = -2 Divide each side by '3'. z = -0.6666666667 Simplifying z = -0.6666666667
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