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Simplifying 20 + -2Q = 4Q Solving 20 + -2Q = 4Q Solving for variable 'Q'. Move all terms containing Q to the left, all other terms to the right. Add '-4Q' to each side of the equation. 20 + -2Q + -4Q = 4Q + -4Q Combine like terms: -2Q + -4Q = -6Q 20 + -6Q = 4Q + -4Q Combine like terms: 4Q + -4Q = 0 20 + -6Q = 0 Add '-20' to each side of the equation. 20 + -20 + -6Q = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -6Q = 0 + -20 -6Q = 0 + -20 Combine like terms: 0 + -20 = -20 -6Q = -20 Divide each side by '-6'. Q = 3.333333333 Simplifying Q = 3.333333333
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