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Simplifying -2(u + 4) = -5u + 7 Reorder the terms: -2(4 + u) = -5u + 7 (4 * -2 + u * -2) = -5u + 7 (-8 + -2u) = -5u + 7 Reorder the terms: -8 + -2u = 7 + -5u Solving -8 + -2u = 7 + -5u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '5u' to each side of the equation. -8 + -2u + 5u = 7 + -5u + 5u Combine like terms: -2u + 5u = 3u -8 + 3u = 7 + -5u + 5u Combine like terms: -5u + 5u = 0 -8 + 3u = 7 + 0 -8 + 3u = 7 Add '8' to each side of the equation. -8 + 8 + 3u = 7 + 8 Combine like terms: -8 + 8 = 0 0 + 3u = 7 + 8 3u = 7 + 8 Combine like terms: 7 + 8 = 15 3u = 15 Divide each side by '3'. u = 5 Simplifying u = 5
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