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Simplifying -18 = 4u + 4 Reorder the terms: -18 = 4 + 4u Solving -18 = 4 + 4u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-4u' to each side of the equation. -18 + -4u = 4 + 4u + -4u Combine like terms: 4u + -4u = 0 -18 + -4u = 4 + 0 -18 + -4u = 4 Add '18' to each side of the equation. -18 + 18 + -4u = 4 + 18 Combine like terms: -18 + 18 = 0 0 + -4u = 4 + 18 -4u = 4 + 18 Combine like terms: 4 + 18 = 22 -4u = 22 Divide each side by '-4'. u = -5.5 Simplifying u = -5.5
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