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Simplifying -2 = 2(u + -7) Reorder the terms: -2 = 2(-7 + u) -2 = (-7 * 2 + u * 2) -2 = (-14 + 2u) Solving -2 = -14 + 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 = -14 + 2u + -2u Combine like terms: 2u + -2u = 0 -2 + -2u = -14 + 0 -2 + -2u = -14 Add '2' to each side of the equation. -2 + 2 + -2u = -14 + 2 Combine like terms: -2 + 2 = 0 0 + -2u = -14 + 2 -2u = -14 + 2 Combine like terms: -14 + 2 = -12 -2u = -12 Divide each side by '-2'. u = 6 Simplifying u = 6
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