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Simplifying 2u + -4 = -4u + 20 Reorder the terms: -4 + 2u = -4u + 20 Reorder the terms: -4 + 2u = 20 + -4u Solving -4 + 2u = 20 + -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. -4 + 2u + 4u = 20 + -4u + 4u Combine like terms: 2u + 4u = 6u -4 + 6u = 20 + -4u + 4u Combine like terms: -4u + 4u = 0 -4 + 6u = 20 + 0 -4 + 6u = 20 Add '4' to each side of the equation. -4 + 4 + 6u = 20 + 4 Combine like terms: -4 + 4 = 0 0 + 6u = 20 + 4 6u = 20 + 4 Combine like terms: 20 + 4 = 24 6u = 24 Divide each side by '6'. u = 4 Simplifying u = 4
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