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Simplifying 5(2z) = -30 Remove parenthesis around (2z) 5 * 2z = -30 Multiply 5 * 2 10z = -30 Solving 10z = -30 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Divide each side by '10'. z = -3 Simplifying z = -3
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