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Simplifying -12 = -6u + 4(u + -4) Reorder the terms: -12 = -6u + 4(-4 + u) -12 = -6u + (-4 * 4 + u * 4) -12 = -6u + (-16 + 4u) Reorder the terms: -12 = -16 + -6u + 4u Combine like terms: -6u + 4u = -2u -12 = -16 + -2u Solving -12 = -16 + -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. -12 + 2u = -16 + -2u + 2u Combine like terms: -2u + 2u = 0 -12 + 2u = -16 + 0 -12 + 2u = -16 Add '12' to each side of the equation. -12 + 12 + 2u = -16 + 12 Combine like terms: -12 + 12 = 0 0 + 2u = -16 + 12 2u = -16 + 12 Combine like terms: -16 + 12 = -4 2u = -4 Divide each side by '2'. u = -2 Simplifying u = -2
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