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Simplifying -15 = 2u + -15 Reorder the terms: -15 = -15 + 2u Add '15' to each side of the equation. -15 + 15 = -15 + 15 + 2u Combine like terms: -15 + 15 = 0 0 = -15 + 15 + 2u Combine like terms: -15 + 15 = 0 0 = 0 + 2u 0 = 2u Solving 0 = 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. 0 + -2u = 2u + -2u Remove the zero: -2u = 2u + -2u Combine like terms: 2u + -2u = 0 -2u = 0 Divide each side by '-2'. u = 0 Simplifying u = 0
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