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Simplifying 7u + 4 = 3(u + -4) Reorder the terms: 4 + 7u = 3(u + -4) Reorder the terms: 4 + 7u = 3(-4 + u) 4 + 7u = (-4 * 3 + u * 3) 4 + 7u = (-12 + 3u) Solving 4 + 7u = -12 + 3u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-3u' to each side of the equation. 4 + 7u + -3u = -12 + 3u + -3u Combine like terms: 7u + -3u = 4u 4 + 4u = -12 + 3u + -3u Combine like terms: 3u + -3u = 0 4 + 4u = -12 + 0 4 + 4u = -12 Add '-4' to each side of the equation. 4 + -4 + 4u = -12 + -4 Combine like terms: 4 + -4 = 0 0 + 4u = -12 + -4 4u = -12 + -4 Combine like terms: -12 + -4 = -16 4u = -16 Divide each side by '4'. u = -4 Simplifying u = -4
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