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Simplifying 2(u + 2) + -4u = 20 Reorder the terms: 2(2 + u) + -4u = 20 (2 * 2 + u * 2) + -4u = 20 (4 + 2u) + -4u = 20 Combine like terms: 2u + -4u = -2u 4 + -2u = 20 Solving 4 + -2u = 20 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -2u = 20 + -4 Combine like terms: 4 + -4 = 0 0 + -2u = 20 + -4 -2u = 20 + -4 Combine like terms: 20 + -4 = 16 -2u = 16 Divide each side by '-2'. u = -8 Simplifying u = -8
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