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Simplifying -2u + -39 = -9(u + 2) Reorder the terms: -39 + -2u = -9(u + 2) Reorder the terms: -39 + -2u = -9(2 + u) -39 + -2u = (2 * -9 + u * -9) -39 + -2u = (-18 + -9u) Solving -39 + -2u = -18 + -9u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '9u' to each side of the equation. -39 + -2u + 9u = -18 + -9u + 9u Combine like terms: -2u + 9u = 7u -39 + 7u = -18 + -9u + 9u Combine like terms: -9u + 9u = 0 -39 + 7u = -18 + 0 -39 + 7u = -18 Add '39' to each side of the equation. -39 + 39 + 7u = -18 + 39 Combine like terms: -39 + 39 = 0 0 + 7u = -18 + 39 7u = -18 + 39 Combine like terms: -18 + 39 = 21 7u = 21 Divide each side by '7'. u = 3 Simplifying u = 3
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