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Simplifying -2(2v + -1u) + -5(-4u + -5v) = 0 Reorder the terms: -2(-1u + 2v) + -5(-4u + -5v) = 0 (-1u * -2 + 2v * -2) + -5(-4u + -5v) = 0 (2u + -4v) + -5(-4u + -5v) = 0 2u + -4v + (-4u * -5 + -5v * -5) = 0 2u + -4v + (20u + 25v) = 0 Reorder the terms: 2u + 20u + -4v + 25v = 0 Combine like terms: 2u + 20u = 22u 22u + -4v + 25v = 0 Combine like terms: -4v + 25v = 21v 22u + 21v = 0 Solving 22u + 21v = 0 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-21v' to each side of the equation. 22u + 21v + -21v = 0 + -21v Combine like terms: 21v + -21v = 0 22u + 0 = 0 + -21v 22u = 0 + -21v Remove the zero: 22u = -21v Divide each side by '22'. u = -0.9545454545v Simplifying u = -0.9545454545v
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