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Simplifying 9 = 30 + 0.5Q Solving 9 = 30 + 0.5Q Solving for variable 'Q'. Move all terms containing Q to the left, all other terms to the right. Add '-0.5Q' to each side of the equation. 9 + -0.5Q = 30 + 0.5Q + -0.5Q Combine like terms: 0.5Q + -0.5Q = 0.0 9 + -0.5Q = 30 + 0.0 9 + -0.5Q = 30 Add '-9' to each side of the equation. 9 + -9 + -0.5Q = 30 + -9 Combine like terms: 9 + -9 = 0 0 + -0.5Q = 30 + -9 -0.5Q = 30 + -9 Combine like terms: 30 + -9 = 21 -0.5Q = 21 Divide each side by '-0.5'. Q = -42 Simplifying Q = -42
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