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Simplifying 8 = 2(u + -1) Reorder the terms: 8 = 2(-1 + u) 8 = (-1 * 2 + u * 2) 8 = (-2 + 2u) Solving 8 = -2 + 2u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-2u' to each side of the equation. 8 + -2u = -2 + 2u + -2u Combine like terms: 2u + -2u = 0 8 + -2u = -2 + 0 8 + -2u = -2 Add '-8' to each side of the equation. 8 + -8 + -2u = -2 + -8 Combine like terms: 8 + -8 = 0 0 + -2u = -2 + -8 -2u = -2 + -8 Combine like terms: -2 + -8 = -10 -2u = -10 Divide each side by '-2'. u = 5 Simplifying u = 5
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