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Simplifying -2 = 2(u + -6) + -4u Reorder the terms: -2 = 2(-6 + u) + -4u -2 = (-6 * 2 + u * 2) + -4u -2 = (-12 + 2u) + -4u Combine like terms: 2u + -4u = -2u -2 = -12 + -2u Solving -2 = -12 + -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. -2 + 2u = -12 + -2u + 2u Combine like terms: -2u + 2u = 0 -2 + 2u = -12 + 0 -2 + 2u = -12 Add '2' to each side of the equation. -2 + 2 + 2u = -12 + 2 Combine like terms: -2 + 2 = 0 0 + 2u = -12 + 2 2u = -12 + 2 Combine like terms: -12 + 2 = -10 2u = -10 Divide each side by '2'. u = -5 Simplifying u = -5
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