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Simplifying 4u + 8(u + 5) = -20 Reorder the terms: 4u + 8(5 + u) = -20 4u + (5 * 8 + u * 8) = -20 4u + (40 + 8u) = -20 Reorder the terms: 40 + 4u + 8u = -20 Combine like terms: 4u + 8u = 12u 40 + 12u = -20 Solving 40 + 12u = -20 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-40' to each side of the equation. 40 + -40 + 12u = -20 + -40 Combine like terms: 40 + -40 = 0 0 + 12u = -20 + -40 12u = -20 + -40 Combine like terms: -20 + -40 = -60 12u = -60 Divide each side by '12'. u = -5 Simplifying u = -5
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