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Simplifying 15 = -15 + 8u Solving 15 = -15 + 8u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-8u' to each side of the equation. 15 + -8u = -15 + 8u + -8u Combine like terms: 8u + -8u = 0 15 + -8u = -15 + 0 15 + -8u = -15 Add '-15' to each side of the equation. 15 + -15 + -8u = -15 + -15 Combine like terms: 15 + -15 = 0 0 + -8u = -15 + -15 -8u = -15 + -15 Combine like terms: -15 + -15 = -30 -8u = -30 Divide each side by '-8'. u = 3.75 Simplifying u = 3.75
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