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Simplifying -1(4u + -7v + w) = 0 (4u * -1 + -7v * -1 + w * -1) = 0 (-4u + 7v + -1w) = 0 Solving -4u + 7v + -1w = 0 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-7v' to each side of the equation. -4u + 7v + -7v + -1w = 0 + -7v Combine like terms: 7v + -7v = 0 -4u + 0 + -1w = 0 + -7v -4u + -1w = 0 + -7v Remove the zero: -4u + -1w = -7v Add 'w' to each side of the equation. -4u + -1w + w = -7v + w Combine like terms: -1w + w = 0 -4u + 0 = -7v + w -4u = -7v + w Divide each side by '-4'. u = 1.75v + -0.25w Simplifying u = 1.75v + -0.25w
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