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Simplifying 15u + v + 6u + 8v = 0 Reorder the terms: 15u + 6u + v + 8v = 0 Combine like terms: 15u + 6u = 21u 21u + v + 8v = 0 Combine like terms: v + 8v = 9v 21u + 9v = 0 Solving 21u + 9v = 0 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-9v' to each side of the equation. 21u + 9v + -9v = 0 + -9v Combine like terms: 9v + -9v = 0 21u + 0 = 0 + -9v 21u = 0 + -9v Remove the zero: 21u = -9v Divide each side by '21'. u = -0.4285714286v Simplifying u = -0.4285714286v
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