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Simplifying -4 = -3u + 8(u + 2) Reorder the terms: -4 = -3u + 8(2 + u) -4 = -3u + (2 * 8 + u * 8) -4 = -3u + (16 + 8u) Reorder the terms: -4 = 16 + -3u + 8u Combine like terms: -3u + 8u = 5u -4 = 16 + 5u Solving -4 = 16 + 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. -4 + -5u = 16 + 5u + -5u Combine like terms: 5u + -5u = 0 -4 + -5u = 16 + 0 -4 + -5u = 16 Add '4' to each side of the equation. -4 + 4 + -5u = 16 + 4 Combine like terms: -4 + 4 = 0 0 + -5u = 16 + 4 -5u = 16 + 4 Combine like terms: 16 + 4 = 20 -5u = 20 Divide each side by '-5'. u = -4 Simplifying u = -4
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