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Simplifying -2(u + -7) = -4u + -4 Reorder the terms: -2(-7 + u) = -4u + -4 (-7 * -2 + u * -2) = -4u + -4 (14 + -2u) = -4u + -4 Reorder the terms: 14 + -2u = -4 + -4u Solving 14 + -2u = -4 + -4u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '4u' to each side of the equation. 14 + -2u + 4u = -4 + -4u + 4u Combine like terms: -2u + 4u = 2u 14 + 2u = -4 + -4u + 4u Combine like terms: -4u + 4u = 0 14 + 2u = -4 + 0 14 + 2u = -4 Add '-14' to each side of the equation. 14 + -14 + 2u = -4 + -14 Combine like terms: 14 + -14 = 0 0 + 2u = -4 + -14 2u = -4 + -14 Combine like terms: -4 + -14 = -18 2u = -18 Divide each side by '2'. u = -9 Simplifying u = -9
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