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Simplifying 7 + 2Q = 20 + -1Q Solving 7 + 2Q = 20 + -1Q Solving for variable 'Q'. Move all terms containing Q to the left, all other terms to the right. Add 'Q' to each side of the equation. 7 + 2Q + Q = 20 + -1Q + Q Combine like terms: 2Q + Q = 3Q 7 + 3Q = 20 + -1Q + Q Combine like terms: -1Q + Q = 0 7 + 3Q = 20 + 0 7 + 3Q = 20 Add '-7' to each side of the equation. 7 + -7 + 3Q = 20 + -7 Combine like terms: 7 + -7 = 0 0 + 3Q = 20 + -7 3Q = 20 + -7 Combine like terms: 20 + -7 = 13 3Q = 13 Divide each side by '3'. Q = 4.333333333 Simplifying Q = 4.333333333
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